Precalculus Examples

$\frac{6 x^{2} + 1}{x^{2} {(x - 1)}^{3}}$

Step 1

Decompose the fraction and multiply through by the common denominator.

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Step 1.1

For each factor in the denominator, create a new fraction using the factor as the denominator, and an unknown value as the numerator. Since the factor in the denominator is linear, put a single variable in its place $C$ .

$\frac{A}{x^{2}} + \frac{B}{x} + \frac{C}{{(x - 1)}^{3}}$

Step 1.2

$\frac{A}{x^{2}} + \frac{B}{x} + \frac{C}{{(x - 1)}^{3}} + \frac{D}{{(x - 1)}^{2}}$

Step 1.3

$\frac{A}{x^{2}} + \frac{B}{x} + \frac{C}{{(x - 1)}^{3}} + \frac{D}{{(x - 1)}^{2}} + \frac{F}{x - 1}$

Step 1.4

Multiply each fraction in the equation by the denominator of the original expression. In this case, the denominator is $x^{2} {(x - 1)}^{3}$ .

$\frac{(6 x^{2} + 1) (x^{2} {(x - 1)}^{3})}{x^{2} {(x - 1)}^{3}} = \frac{A (x^{2} {(x - 1)}^{3})}{x^{2}} + \frac{B (x^{2} {(x - 1)}^{3})}{x} + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.5

Cancel the common factor of $x^{2}$ .

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Step 1.5.1

Cancel the common factor.

Step 1.5.2

Rewrite the expression.

$\frac{(6 x^{2} + 1) ({(x - 1)}^{3})}{{(x - 1)}^{3}} = \frac{A (x^{2} {(x - 1)}^{3})}{x^{2}} + \frac{B (x^{2} {(x - 1)}^{3})}{x} + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.6

Cancel the common factor of ${(x - 1)}^{3}$ .

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Step 1.6.1

Cancel the common factor.

$\frac{(6 x^{2} + 1) {(x - 1)}^{3}}{{(x - 1)}^{3}} = \frac{A (x^{2} {(x - 1)}^{3})}{x^{2}} + \frac{B (x^{2} {(x - 1)}^{3})}{x} + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.6.2

Divide $6 x^{2} + 1$ by $1$ .

$6 x^{2} + 1 = \frac{A (x^{2} {(x - 1)}^{3})}{x^{2}} + \frac{B (x^{2} {(x - 1)}^{3})}{x} + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7

Simplify each term.

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Step 1.7.1

Cancel the common factor of $x^{2}$ .

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Step 1.7.1.1

Cancel the common factor.

Step 1.7.1.2

Divide $A ({(x - 1)}^{3})$ by $1$ .

$6 x^{2} + 1 = A ({(x - 1)}^{3}) + \frac{B (x^{2} {(x - 1)}^{3})}{x} + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.2

Use the Binomial Theorem.

$6 x^{2} + 1 = A (x^{3} + 3 x^{2} \cdot - 1 + 3 x {(- 1)}^{2} + {(- 1)}^{3}) + \frac{B (x^{2} {(x - 1)}^{3})}{x} + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.3

Simplify each term.

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Step 1.7.3.1

Multiply $- 1$ by $3$ .

$6 x^{2} + 1 = A (x^{3} - 3 x^{2} + 3 x {(- 1)}^{2} + {(- 1)}^{3}) + \frac{B (x^{2} {(x - 1)}^{3})}{x} + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.3.2

Raise $- 1$ to the power of $2$ .

$6 x^{2} + 1 = A (x^{3} - 3 x^{2} + 3 x \cdot 1 + {(- 1)}^{3}) + \frac{B (x^{2} {(x - 1)}^{3})}{x} + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.3.3

Multiply $3$ by $1$ .

$6 x^{2} + 1 = A (x^{3} - 3 x^{2} + 3 x + {(- 1)}^{3}) + \frac{B (x^{2} {(x - 1)}^{3})}{x} + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.3.4

Raise $- 1$ to the power of $3$ .

$6 x^{2} + 1 = A (x^{3} - 3 x^{2} + 3 x - 1) + \frac{B (x^{2} {(x - 1)}^{3})}{x} + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.4

Apply the distributive property.

$6 x^{2} + 1 = A x^{3} + A (- 3 x^{2}) + A (3 x) + A \cdot - 1 + \frac{B (x^{2} {(x - 1)}^{3})}{x} + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.5

Simplify.

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Step 1.7.5.1

Rewrite using the commutative property of multiplication.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + A (3 x) + A \cdot - 1 + \frac{B (x^{2} {(x - 1)}^{3})}{x} + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.5.2

Rewrite using the commutative property of multiplication.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x + A \cdot - 1 + \frac{B (x^{2} {(x - 1)}^{3})}{x} + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.5.3

Move $- 1$ to the left of $A$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - 1 \cdot A + \frac{B (x^{2} {(x - 1)}^{3})}{x} + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.6

Rewrite $- 1 A$ as $- A$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + \frac{B (x^{2} {(x - 1)}^{3})}{x} + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.7

Cancel the common factor of $x^{2}$ and $x$ .

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Step 1.7.7.1

Factor $x$ out of $B (x^{2} {(x - 1)}^{3})$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + \frac{x (B (x {(x - 1)}^{3}))}{x} + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.7.2

Cancel the common factors.

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Step 1.7.7.2.1

Raise $x$ to the power of $1$ .

Step 1.7.7.2.2

Factor $x$ out of $x^{1}$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + \frac{x (B (x {(x - 1)}^{3}))}{x \cdot 1} + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.7.2.3

Cancel the common factor.

Step 1.7.7.2.4

Rewrite the expression.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + \frac{B (x {(x - 1)}^{3})}{1} + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.7.2.5

Divide $B (x {(x - 1)}^{3})$ by $1$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B (x {(x - 1)}^{3}) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.8

Use the Binomial Theorem.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B (x (x^{3} + 3 x^{2} \cdot - 1 + 3 x {(- 1)}^{2} + {(- 1)}^{3})) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.9

Simplify each term.

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Step 1.7.9.1

Multiply $- 1$ by $3$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B (x (x^{3} - 3 x^{2} + 3 x {(- 1)}^{2} + {(- 1)}^{3})) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.9.2

Raise $- 1$ to the power of $2$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B (x (x^{3} - 3 x^{2} + 3 x \cdot 1 + {(- 1)}^{3})) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.9.3

Multiply $3$ by $1$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B (x (x^{3} - 3 x^{2} + 3 x + {(- 1)}^{3})) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.9.4

Raise $- 1$ to the power of $3$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B (x (x^{3} - 3 x^{2} + 3 x - 1)) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.10

Apply the distributive property.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B (x \cdot x^{3} + x (- 3 x^{2}) + x (3 x) + x \cdot - 1) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.11

Simplify.

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Step 1.7.11.1

Multiply $x$ by $x^{3}$ by adding the exponents.

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Step 1.7.11.1.1

Multiply $x$ by $x^{3}$ .

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Step 1.7.11.1.1.1

Raise $x$ to the power of $1$ .

Step 1.7.11.1.1.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B (x^{1 + 3} + x (- 3 x^{2}) + x (3 x) + x \cdot - 1) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.11.1.2

Add $1$ and $3$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B (x^{4} + x (- 3 x^{2}) + x (3 x) + x \cdot - 1) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.11.2

Rewrite using the commutative property of multiplication.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B (x^{4} - 3 x \cdot x^{2} + x (3 x) + x \cdot - 1) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.11.3

Rewrite using the commutative property of multiplication.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B (x^{4} - 3 x \cdot x^{2} + 3 x \cdot x + x \cdot - 1) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.11.4

Move $- 1$ to the left of $x$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B (x^{4} - 3 x \cdot x^{2} + 3 x \cdot x - 1 \cdot x) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.12

Simplify each term.

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Step 1.7.12.1

Multiply $x$ by $x^{2}$ by adding the exponents.

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Step 1.7.12.1.1

Move $x^{2}$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B (x^{4} - 3 (x^{2} x) + 3 x \cdot x - 1 \cdot x) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.12.1.2

Multiply $x^{2}$ by $x$ .

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Step 1.7.12.1.2.1

Raise $x$ to the power of $1$ .

Step 1.7.12.1.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B (x^{4} - 3 x^{2 + 1} + 3 x \cdot x - 1 \cdot x) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.12.1.3

Add $2$ and $1$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B (x^{4} - 3 x^{3} + 3 x \cdot x - 1 \cdot x) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.12.2

Multiply $x$ by $x$ by adding the exponents.

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Step 1.7.12.2.1

Move $x$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B (x^{4} - 3 x^{3} + 3 (x \cdot x) - 1 \cdot x) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.12.2.2

Multiply $x$ by $x$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B (x^{4} - 3 x^{3} + 3 x^{2} - 1 \cdot x) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.12.3

Rewrite $- 1 x$ as $- x$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B (x^{4} - 3 x^{3} + 3 x^{2} - x) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.13

Apply the distributive property.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} + B (- 3 x^{3}) + B (3 x^{2}) + B (- x) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.14

Simplify.

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Step 1.7.14.1

Rewrite using the commutative property of multiplication.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + B (3 x^{2}) + B (- x) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.14.2

Rewrite using the commutative property of multiplication.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} + B (- x) + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.14.3

Rewrite using the commutative property of multiplication.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + \frac{(C) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.15

Cancel the common factor of ${(x - 1)}^{3}$ .

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Step 1.7.15.1

Cancel the common factor.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + \frac{C (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{3}} + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.15.2

Divide $(C) (x^{2})$ by $1$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + (C) (x^{2}) + \frac{(D) (x^{2} {(x - 1)}^{3})}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.16

Cancel the common factor of ${(x - 1)}^{3}$ and ${(x - 1)}^{2}$ .

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Step 1.7.16.1

Factor ${(x - 1)}^{2}$ out of $(D) (x^{2} {(x - 1)}^{3})$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + \frac{{(x - 1)}^{2} (D (x^{2} (x - 1)))}{{(x - 1)}^{2}} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.16.2

Cancel the common factors.

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Step 1.7.16.2.1

Multiply by $1$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + \frac{{(x - 1)}^{2} (D (x^{2} (x - 1)))}{{(x - 1)}^{2} \cdot 1} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.16.2.2

Cancel the common factor.

Step 1.7.16.2.3

Rewrite the expression.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + \frac{D (x^{2} (x - 1))}{1} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.16.2.4

Divide $D (x^{2} (x - 1))$ by $1$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D (x^{2} (x - 1)) + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.17

Apply the distributive property.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D (x^{2} x + x^{2} \cdot - 1) + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.18

Multiply $x^{2}$ by $x$ by adding the exponents.

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Step 1.7.18.1

Multiply $x^{2}$ by $x$ .

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Step 1.7.18.1.1

Raise $x$ to the power of $1$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D (x^{2} x + x^{2} \cdot - 1) + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.18.1.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D (x^{2 + 1} + x^{2} \cdot - 1) + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.18.2

Add $2$ and $1$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D (x^{3} + x^{2} \cdot - 1) + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.19

Move $- 1$ to the left of $x^{2}$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D (x^{3} - 1 \cdot x^{2}) + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.20

Rewrite $- 1 x^{2}$ as $- x^{2}$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D (x^{3} - x^{2}) + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.21

Apply the distributive property.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} + D (- x^{2}) + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.22

Rewrite using the commutative property of multiplication.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + \frac{(F) (x^{2} {(x - 1)}^{3})}{x - 1}$

Step 1.7.23

Cancel the common factor of ${(x - 1)}^{3}$ and $x - 1$ .

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Step 1.7.23.1

Factor $x - 1$ out of $(F) (x^{2} {(x - 1)}^{3})$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + \frac{(x - 1) (F (x^{2} {(x - 1)}^{2}))}{x - 1}$

Step 1.7.23.2

Cancel the common factors.

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Step 1.7.23.2.1

Multiply by $1$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + \frac{(x - 1) (F (x^{2} {(x - 1)}^{2}))}{(x - 1) \cdot 1}$

Step 1.7.23.2.2

Cancel the common factor.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + \frac{(x - 1) (F (x^{2} {(x - 1)}^{2}))}{(x - 1) \cdot 1}$

Step 1.7.23.2.3

Rewrite the expression.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + \frac{F (x^{2} {(x - 1)}^{2})}{1}$

Step 1.7.23.2.4

Divide $F (x^{2} {(x - 1)}^{2})$ by $1$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{2} {(x - 1)}^{2})$

Step 1.7.24

Rewrite ${(x - 1)}^{2}$ as $(x - 1) (x - 1)$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{2} ((x - 1) (x - 1)))$

Step 1.7.25

Expand $(x - 1) (x - 1)$ using the FOIL Method.

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Step 1.7.25.1

Apply the distributive property.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{2} (x (x - 1) - 1 (x - 1)))$

Step 1.7.25.2

Apply the distributive property.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{2} (x \cdot x + x \cdot - 1 - 1 (x - 1)))$

Step 1.7.25.3

Apply the distributive property.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{2} (x \cdot x + x \cdot - 1 - 1 x - 1 \cdot - 1))$

Step 1.7.26

Simplify and combine like terms.

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Step 1.7.26.1

Simplify each term.

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Step 1.7.26.1.1

Multiply $x$ by $x$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{2} (x^{2} + x \cdot - 1 - 1 x - 1 \cdot - 1))$

Step 1.7.26.1.2

Move $- 1$ to the left of $x$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{2} (x^{2} - 1 \cdot x - 1 x - 1 \cdot - 1))$

Step 1.7.26.1.3

Rewrite $- 1 x$ as $- x$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{2} (x^{2} - x - 1 x - 1 \cdot - 1))$

Step 1.7.26.1.4

Rewrite $- 1 x$ as $- x$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{2} (x^{2} - x - x - 1 \cdot - 1))$

Step 1.7.26.1.5

Multiply $- 1$ by $- 1$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{2} (x^{2} - x - x + 1))$

Step 1.7.26.2

Subtract $x$ from $- x$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{2} (x^{2} - 2 x + 1))$

Step 1.7.27

Apply the distributive property.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{2} x^{2} + x^{2} (- 2 x) + x^{2} \cdot 1)$

Step 1.7.28

Simplify.

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Step 1.7.28.1

Multiply $x^{2}$ by $x^{2}$ by adding the exponents.

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Step 1.7.28.1.1

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{2 + 2} + x^{2} (- 2 x) + x^{2} \cdot 1)$

Step 1.7.28.1.2

Add $2$ and $2$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{4} + x^{2} (- 2 x) + x^{2} \cdot 1)$

Step 1.7.28.2

Rewrite using the commutative property of multiplication.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{4} - 2 x^{2} x + x^{2} \cdot 1)$

Step 1.7.28.3

Multiply $x^{2}$ by $1$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{4} - 2 x^{2} x + x^{2})$

Step 1.7.29

Multiply $x^{2}$ by $x$ by adding the exponents.

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Step 1.7.29.1

Move $x$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{4} - 2 (x \cdot x^{2}) + x^{2})$

Step 1.7.29.2

Multiply $x$ by $x^{2}$ .

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Step 1.7.29.2.1

Raise $x$ to the power of $1$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{4} - 2 (x \cdot x^{2}) + x^{2})$

Step 1.7.29.2.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{4} - 2 x^{1 + 2} + x^{2})$

Step 1.7.29.3

Add $1$ and $2$ .

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F (x^{4} - 2 x^{3} + x^{2})$

Step 1.7.30

Apply the distributive property.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F x^{4} + F (- 2 x^{3}) + F x^{2}$

Step 1.7.31

Rewrite using the commutative property of multiplication.

$6 x^{2} + 1 = A x^{3} - 3 A x^{2} + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F x^{4} - 2 F x^{3} + F x^{2}$

Step 1.8

Simplify the expression.

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Step 1.8.1

Move $A$ .

$6 x^{2} + 1 = A x^{3} - 3 x^{2} A + 3 A x - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F x^{4} - 2 F x^{3} + F x^{2}$

Step 1.8.2

Move $A$ .

$6 x^{2} + 1 = A x^{3} - 3 x^{2} A + 3 x A - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F x^{4} - 2 F x^{3} + F x^{2}$

Step 1.8.3

Reorder $B$ and $x^{4}$ .

$6 x^{2} + 1 = A x^{3} - 3 x^{2} A + 3 x A - A + B x^{4} - 3 B x^{3} + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F x^{4} - 2 F x^{3} + F x^{2}$

Step 1.8.4

Move $B$ .

$6 x^{2} + 1 = A x^{3} - 3 x^{2} A + 3 x A - A + B x^{4} - 3 x^{3} B + 3 B x^{2} - B x + C x^{2} + D x^{3} - D x^{2} + F x^{4} - 2 F x^{3} + F x^{2}$

Step 1.8.5

Move $B$ .

$6 x^{2} + 1 = A x^{3} - 3 x^{2} A + 3 x A - A + B x^{4} - 3 x^{3} B + 3 x^{2} B - B x + C x^{2} + D x^{3} - D x^{2} + F x^{4} - 2 F x^{3} + F x^{2}$

Step 1.8.6

Move $B$ .

$6 x^{2} + 1 = A x^{3} - 3 x^{2} A + 3 x A - A + B x^{4} - 3 x^{3} B + 3 x^{2} B - x B + C x^{2} + D x^{3} - D x^{2} + F x^{4} - 2 F x^{3} + F x^{2}$

Step 1.8.7

Reorder $F$ and $x^{4}$ .

$6 x^{2} + 1 = A x^{3} - 3 x^{2} A + 3 x A - A + B x^{4} - 3 x^{3} B + 3 x^{2} B - x B + C x^{2} + D x^{3} - D x^{2} + F x^{4} - 2 F x^{3} + F x^{2}$

Step 1.8.8

Move $F$ .

$6 x^{2} + 1 = A x^{3} - 3 x^{2} A + 3 x A - A + B x^{4} - 3 x^{3} B + 3 x^{2} B - x B + C x^{2} + D x^{3} - D x^{2} + F x^{4} - 2 x^{3} F + F x^{2}$

Step 1.8.9

Reorder $F$ and $x^{2}$ .

$6 x^{2} + 1 = A x^{3} - 3 x^{2} A + 3 x A - A + B x^{4} - 3 x^{3} B + 3 x^{2} B - x B + C x^{2} + D x^{3} - D x^{2} + F x^{4} - 2 x^{3} F + F x^{2}$

Step 1.8.10

Move $- A$ .

$6 x^{2} + 1 = A x^{3} - 3 x^{2} A + 3 x A + B x^{4} - 3 x^{3} B + 3 x^{2} B - x B + C x^{2} + D x^{3} - D x^{2} + F x^{4} - 2 x^{3} F + F x^{2} - A$

Step 1.8.11

Move $- x B$ .

$6 x^{2} + 1 = A x^{3} - 3 x^{2} A + 3 x A + B x^{4} - 3 x^{3} B + 3 x^{2} B + C x^{2} + D x^{3} - D x^{2} + F x^{4} - 2 x^{3} F + F x^{2} - x B - A$

Step 1.8.12

Move $3 x A$ .

$6 x^{2} + 1 = A x^{3} - 3 x^{2} A + B x^{4} - 3 x^{3} B + 3 x^{2} B + C x^{2} + D x^{3} - D x^{2} + F x^{4} - 2 x^{3} F + F x^{2} + 3 x A - x B - A$

Step 1.8.13

Move $- D x^{2}$ .

$6 x^{2} + 1 = A x^{3} - 3 x^{2} A + B x^{4} - 3 x^{3} B + 3 x^{2} B + C x^{2} + D x^{3} + F x^{4} - 2 x^{3} F - D x^{2} + F x^{2} + 3 x A - x B - A$

Step 1.8.14

Move $C x^{2}$ .

$6 x^{2} + 1 = A x^{3} - 3 x^{2} A + B x^{4} - 3 x^{3} B + 3 x^{2} B + D x^{3} + F x^{4} - 2 x^{3} F + C x^{2} - D x^{2} + F x^{2} + 3 x A - x B - A$

Step 1.8.15

Move $3 x^{2} B$ .

$6 x^{2} + 1 = A x^{3} - 3 x^{2} A + B x^{4} - 3 x^{3} B + D x^{3} + F x^{4} - 2 x^{3} F + 3 x^{2} B + C x^{2} - D x^{2} + F x^{2} + 3 x A - x B - A$

Step 1.8.16

Move $- 3 x^{2} A$ .

$6 x^{2} + 1 = A x^{3} + B x^{4} - 3 x^{3} B + D x^{3} + F x^{4} - 2 x^{3} F - 3 x^{2} A + 3 x^{2} B + C x^{2} - D x^{2} + F x^{2} + 3 x A - x B - A$

Step 1.8.17

Move $D x^{3}$ .

$6 x^{2} + 1 = A x^{3} + B x^{4} - 3 x^{3} B + F x^{4} + D x^{3} - 2 x^{3} F - 3 x^{2} A + 3 x^{2} B + C x^{2} - D x^{2} + F x^{2} + 3 x A - x B - A$

Step 1.8.18

Move $- 3 x^{3} B$ .

$6 x^{2} + 1 = A x^{3} + B x^{4} + F x^{4} - 3 x^{3} B + D x^{3} - 2 x^{3} F - 3 x^{2} A + 3 x^{2} B + C x^{2} - D x^{2} + F x^{2} + 3 x A - x B - A$

Step 1.8.19

Move $A x^{3}$ .

$6 x^{2} + 1 = B x^{4} + F x^{4} + A x^{3} - 3 x^{3} B + D x^{3} - 2 x^{3} F - 3 x^{2} A + 3 x^{2} B + C x^{2} - D x^{2} + F x^{2} + 3 x A - x B - A$

Step 2

Create equations for the partial fraction variables and use them to set up a system of equations.

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Step 2.1

Create an equation for the partial fraction variables by equating the coefficients of $x^{4}$ from each side of the equation. For the equation to be equal, the equivalent coefficients on each side of the equation must be equal.

$0 = B + F$

Step 2.2

Create an equation for the partial fraction variables by equating the coefficients of $x^{3}$ from each side of the equation. For the equation to be equal, the equivalent coefficients on each side of the equation must be equal.

$0 = A - 3 B + D - 2 F$

Step 2.3

Create an equation for the partial fraction variables by equating the coefficients of $x^{2}$ from each side of the equation. For the equation to be equal, the equivalent coefficients on each side of the equation must be equal.

$6 = - 3 A + 3 B + C - 1 D + F$

Step 2.4

Create an equation for the partial fraction variables by equating the coefficients of $x$ from each side of the equation. For the equation to be equal, the equivalent coefficients on each side of the equation must be equal.

$0 = 3 A - 1 B$

Step 2.5

Create an equation for the partial fraction variables by equating the coefficients of the terms not containing $x$ . For the equation to be equal, the equivalent coefficients on each side of the equation must be equal.

$1 = - 1 A$

Step 2.6

Set up the system of equations to find the coefficients of the partial fractions.

$0 = B + F$

$0 = A - 3 B + D - 2 F$

$6 = - 3 A + 3 B + C - 1 D + F$

$0 = 3 A - 1 B$

$1 = - 1 A$

$0 = B + F$

$0 = A - 3 B + D - 2 F$

$6 = - 3 A + 3 B + C - 1 D + F$

$0 = 3 A - 1 B$

$1 = - 1 A$

Step 3

Solve the system of equations.

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Step 3.1

Solve for $A$ in $1 = - 1 A$ .

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Step 3.1.1

Rewrite the equation as $- 1 A = 1$ .

$- 1 A = 1$

$0 = B + F$

$0 = A - 3 B + D - 2 F$

$6 = - 3 A + 3 B + C - 1 D + F$

$0 = 3 A - 1 B$

Step 3.1.2

Divide each term in $- 1 A = 1$ by $- 1$ and simplify.

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Step 3.1.2.1

Divide each term in $- 1 A = 1$ by $- 1$ .

$\frac{- 1 A}{- 1} = \frac{1}{- 1}$

$0 = B + F$

$0 = A - 3 B + D - 2 F$

$6 = - 3 A + 3 B + C - 1 D + F$

$0 = 3 A - 1 B$

Step 3.1.2.2

Simplify the left side.

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Step 3.1.2.2.1

Dividing two negative values results in a positive value.

$\frac{A}{1} = \frac{1}{- 1}$

$0 = B + F$

$0 = A - 3 B + D - 2 F$

$6 = - 3 A + 3 B + C - 1 D + F$

$0 = 3 A - 1 B$

Step 3.1.2.2.2

Divide $A$ by $1$ .

$A = \frac{1}{- 1}$

$0 = B + F$

$0 = A - 3 B + D - 2 F$

$6 = - 3 A + 3 B + C - 1 D + F$

$0 = 3 A - 1 B$

$A = \frac{1}{- 1}$

$0 = B + F$

$0 = A - 3 B + D - 2 F$

$6 = - 3 A + 3 B + C - 1 D + F$

$0 = 3 A - 1 B$

Step 3.1.2.3

Simplify the right side.

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Step 3.1.2.3.1

Divide $1$ by $- 1$ .

$A = - 1$

$0 = B + F$

$0 = A - 3 B + D - 2 F$

$6 = - 3 A + 3 B + C - 1 D + F$

$0 = 3 A - 1 B$

$A = - 1$

$0 = B + F$

$0 = A - 3 B + D - 2 F$

$6 = - 3 A + 3 B + C - 1 D + F$

$0 = 3 A - 1 B$

$A = - 1$

$0 = B + F$

$0 = A - 3 B + D - 2 F$

$6 = - 3 A + 3 B + C - 1 D + F$

$0 = 3 A - 1 B$

$A = - 1$

$0 = B + F$

$0 = A - 3 B + D - 2 F$

$6 = - 3 A + 3 B + C - 1 D + F$

$0 = 3 A - 1 B$

Step 3.2

Replace all occurrences of $A$ with $- 1$ in each equation.

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Step 3.2.1

Replace all occurrences of $A$ in $0 = A - 3 B + D - 2 F$ with $- 1$ .

$0 = (- 1) - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

$6 = - 3 A + 3 B + C - 1 D + F$

$0 = 3 A - 1 B$

Step 3.2.2

Simplify the right side.

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Step 3.2.2.1

Remove parentheses.

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

$6 = - 3 A + 3 B + C - 1 D + F$

$0 = 3 A - 1 B$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

$6 = - 3 A + 3 B + C - 1 D + F$

$0 = 3 A - 1 B$

Step 3.2.3

Replace all occurrences of $A$ in $6 = - 3 A + 3 B + C - 1 D + F$ with $- 1$ .

$6 = - 3 \cdot - 1 + 3 B + C - 1 D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

$0 = 3 A - 1 B$

Step 3.2.4

Simplify the right side.

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Step 3.2.4.1

Simplify each term.

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Step 3.2.4.1.1

Multiply $- 3$ by $- 1$ .

$6 = 3 + 3 B + C - 1 D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

$0 = 3 A - 1 B$

Step 3.2.4.1.2

Rewrite $- 1 D$ as $- D$ .

$6 = 3 + 3 B + C - D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

$0 = 3 A - 1 B$

$6 = 3 + 3 B + C - D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

$0 = 3 A - 1 B$

$6 = 3 + 3 B + C - D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

$0 = 3 A - 1 B$

Step 3.2.5

Replace all occurrences of $A$ in $0 = 3 A - 1 B$ with $- 1$ .

$0 = 3 (- 1) - 1 B$

$6 = 3 + 3 B + C - D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

Step 3.2.6

Simplify the right side.

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Step 3.2.6.1

Simplify each term.

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Step 3.2.6.1.1

Multiply $3$ by $- 1$ .

$0 = - 3 - 1 B$

$6 = 3 + 3 B + C - D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

Step 3.2.6.1.2

Rewrite $- 1 B$ as $- B$ .

$0 = - 3 - B$

$6 = 3 + 3 B + C - D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

$0 = - 3 - B$

$6 = 3 + 3 B + C - D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

$0 = - 3 - B$

$6 = 3 + 3 B + C - D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

$0 = - 3 - B$

$6 = 3 + 3 B + C - D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

Step 3.3

Solve for $B$ in $0 = - 3 - B$ .

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Step 3.3.1

Rewrite the equation as $- 3 - B = 0$ .

$- 3 - B = 0$

$6 = 3 + 3 B + C - D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

Step 3.3.2

Add $3$ to both sides of the equation.

$- B = 3$

$6 = 3 + 3 B + C - D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

Step 3.3.3

Divide each term in $- B = 3$ by $- 1$ and simplify.

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Step 3.3.3.1

Divide each term in $- B = 3$ by $- 1$ .

$\frac{- B}{- 1} = \frac{3}{- 1}$

$6 = 3 + 3 B + C - D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

Step 3.3.3.2

Simplify the left side.

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Step 3.3.3.2.1

Dividing two negative values results in a positive value.

$\frac{B}{1} = \frac{3}{- 1}$

$6 = 3 + 3 B + C - D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

Step 3.3.3.2.2

Divide $B$ by $1$ .

$B = \frac{3}{- 1}$

$6 = 3 + 3 B + C - D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

$B = \frac{3}{- 1}$

$6 = 3 + 3 B + C - D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

Step 3.3.3.3

Simplify the right side.

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Step 3.3.3.3.1

Divide $3$ by $- 1$ .

$B = - 3$

$6 = 3 + 3 B + C - D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

$B = - 3$

$6 = 3 + 3 B + C - D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

$B = - 3$

$6 = 3 + 3 B + C - D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

$B = - 3$

$6 = 3 + 3 B + C - D + F$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

Step 3.4

Replace all occurrences of $B$ with $- 3$ in each equation.

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Step 3.4.1

Replace all occurrences of $B$ in $6 = 3 + 3 B + C - D + F$ with $- 3$ .

$6 = 3 + 3 (- 3) + C - D + F$

$B = - 3$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

Step 3.4.2

Simplify the right side.

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Step 3.4.2.1

Simplify $3 + 3 (- 3) + C - D + F$ .

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Step 3.4.2.1.1

Multiply $3$ by $- 3$ .

$6 = 3 - 9 + C - D + F$

$B = - 3$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

Step 3.4.2.1.2

Subtract $9$ from $3$ .

$6 = - 6 + C - D + F$

$B = - 3$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

$6 = - 6 + C - D + F$

$B = - 3$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

$6 = - 6 + C - D + F$

$B = - 3$

$0 = - 1 - 3 B + D - 2 F$

$A = - 1$

$0 = B + F$

Step 3.4.3

Replace all occurrences of $B$ in $0 = - 1 - 3 B + D - 2 F$ with $- 3$ .

$0 = - 1 - 3 \cdot - 3 + D - 2 F$

$6 = - 6 + C - D + F$

$B = - 3$

$A = - 1$

$0 = B + F$

Step 3.4.4

Simplify the right side.

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Step 3.4.4.1

Simplify $- 1 - 3 \cdot - 3 + D - 2 F$ .

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Step 3.4.4.1.1

Multiply $- 3$ by $- 3$ .

$0 = - 1 + 9 + D - 2 F$

$6 = - 6 + C - D + F$

$B = - 3$

$A = - 1$

$0 = B + F$

Step 3.4.4.1.2

Add $- 1$ and $9$ .

$0 = 8 + D - 2 F$

$6 = - 6 + C - D + F$

$B = - 3$

$A = - 1$

$0 = B + F$

$0 = 8 + D - 2 F$

$6 = - 6 + C - D + F$

$B = - 3$

$A = - 1$

$0 = B + F$

$0 = 8 + D - 2 F$

$6 = - 6 + C - D + F$

$B = - 3$

$A = - 1$

$0 = B + F$

Step 3.4.5

Replace all occurrences of $B$ in $0 = B + F$ with $- 3$ .

$0 = (- 3) + F$

$0 = 8 + D - 2 F$

$6 = - 6 + C - D + F$

$B = - 3$

$A = - 1$

Step 3.4.6

Simplify the right side.

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Step 3.4.6.1

Remove parentheses.

$0 = - 3 + F$

$0 = 8 + D - 2 F$

$6 = - 6 + C - D + F$

$B = - 3$

$A = - 1$

$0 = - 3 + F$

$0 = 8 + D - 2 F$

$6 = - 6 + C - D + F$

$B = - 3$

$A = - 1$

$0 = - 3 + F$

$0 = 8 + D - 2 F$

$6 = - 6 + C - D + F$

$B = - 3$

$A = - 1$

Step 3.5

Solve for $F$ in $0 = - 3 + F$ .

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Step 3.5.1

Rewrite the equation as $- 3 + F = 0$ .

$- 3 + F = 0$

$0 = 8 + D - 2 F$

$6 = - 6 + C - D + F$

$B = - 3$

$A = - 1$

Step 3.5.2

Add $3$ to both sides of the equation.

$F = 3$

$0 = 8 + D - 2 F$

$6 = - 6 + C - D + F$

$B = - 3$

$A = - 1$

$F = 3$

$0 = 8 + D - 2 F$

$6 = - 6 + C - D + F$

$B = - 3$

$A = - 1$

Step 3.6

Replace all occurrences of $F$ with $3$ in each equation.

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Step 3.6.1

Replace all occurrences of $F$ in $0 = 8 + D - 2 F$ with $3$ .

$0 = 8 + D - 2 \cdot 3$

$F = 3$

$6 = - 6 + C - D + F$

$B = - 3$

$A = - 1$

Step 3.6.2

Simplify the right side.

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Step 3.6.2.1

Simplify $8 + D - 2 \cdot 3$ .

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Step 3.6.2.1.1

Multiply $- 2$ by $3$ .

$0 = 8 + D - 6$

$F = 3$

$6 = - 6 + C - D + F$

$B = - 3$

$A = - 1$

Step 3.6.2.1.2

Subtract $6$ from $8$ .

$0 = D + 2$

$F = 3$

$6 = - 6 + C - D + F$

$B = - 3$

$A = - 1$

$0 = D + 2$

$F = 3$

$6 = - 6 + C - D + F$

$B = - 3$

$A = - 1$

$0 = D + 2$

$F = 3$

$6 = - 6 + C - D + F$

$B = - 3$

$A = - 1$

Step 3.6.3

Replace all occurrences of $F$ in $6 = - 6 + C - D + F$ with $3$ .

$6 = - 6 + C - D + 3$

$0 = D + 2$

$F = 3$

$B = - 3$

$A = - 1$

Step 3.6.4

Simplify $6 = - 6 + C - D + 3$ .

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Step 3.6.4.1

Simplify the left side.

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Step 3.6.4.1.1

Remove parentheses.

$6 = - 6 + C - D + 3$

$0 = D + 2$

$F = 3$

$B = - 3$

$A = - 1$

$6 = - 6 + C - D + 3$

$0 = D + 2$

$F = 3$

$B = - 3$

$A = - 1$

Step 3.6.4.2

Simplify the right side.

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Step 3.6.4.2.1

Add $- 6$ and $3$ .

$6 = C - D - 3$

$0 = D + 2$

$F = 3$

$B = - 3$

$A = - 1$

$6 = C - D - 3$

$0 = D + 2$

$F = 3$

$B = - 3$

$A = - 1$

$6 = C - D - 3$

$0 = D + 2$

$F = 3$

$B = - 3$

$A = - 1$

$6 = C - D - 3$

$0 = D + 2$

$F = 3$

$B = - 3$

$A = - 1$

Step 3.7

Solve for $D$ in $0 = D + 2$ .

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Step 3.7.1

Rewrite the equation as $D + 2 = 0$ .

$D + 2 = 0$

$6 = C - D - 3$

$F = 3$

$B = - 3$

$A = - 1$

Step 3.7.2

Subtract $2$ from both sides of the equation.

$D = - 2$

$6 = C - D - 3$

$F = 3$

$B = - 3$

$A = - 1$

$D = - 2$

$6 = C - D - 3$

$F = 3$

$B = - 3$

$A = - 1$

Step 3.8

Replace all occurrences of $D$ with $- 2$ in each equation.

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Step 3.8.1

Replace all occurrences of $D$ in $6 = C - D - 3$ with $- 2$ .

$6 = C - (- 2) - 3$

$D = - 2$

$F = 3$

$B = - 3$

$A = - 1$

Step 3.8.2

Simplify the right side.

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Step 3.8.2.1

Simplify $C - (- 2) - 3$ .

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Step 3.8.2.1.1

Multiply $- 1$ by $- 2$ .

$6 = C + 2 - 3$

$D = - 2$

$F = 3$

$B = - 3$

$A = - 1$

Step 3.8.2.1.2

Subtract $3$ from $2$ .

$6 = C - 1$

$D = - 2$

$F = 3$

$B = - 3$

$A = - 1$

$6 = C - 1$

$D = - 2$

$F = 3$

$B = - 3$

$A = - 1$

$6 = C - 1$

$D = - 2$

$F = 3$

$B = - 3$

$A = - 1$

$6 = C - 1$

$D = - 2$

$F = 3$

$B = - 3$

$A = - 1$

Step 3.9

Solve for $C$ in $6 = C - 1$ .

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Step 3.9.1

Rewrite the equation as $C - 1 = 6$ .

$C - 1 = 6$

$D = - 2$

$F = 3$

$B = - 3$

$A = - 1$

Step 3.9.2

Move all terms not containing $C$ to the right side of the equation.

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Step 3.9.2.1

Add $1$ to both sides of the equation.

$C = 6 + 1$

$D = - 2$

$F = 3$

$B = - 3$

$A = - 1$

Step 3.9.2.2

Add $6$ and $1$ .

$C = 7$

$D = - 2$

$F = 3$

$B = - 3$

$A = - 1$

$C = 7$

$D = - 2$

$F = 3$

$B = - 3$

$A = - 1$

$C = 7$

$D = - 2$

$F = 3$

$B = - 3$

$A = - 1$

Step 3.10

Solve the system of equations.

$C = 7 D = - 2 F = 3 B = - 3 A = - 1$

Step 3.11

List all of the solutions.

$C = 7, D = - 2, F = 3, B = - 3, A = - 1$

Step 4

Replace each of the partial fraction coefficients in $\frac{A}{x^{2}} + \frac{B}{x} + \frac{C}{{(x - 1)}^{3}} + \frac{D}{{(x - 1)}^{2}} + \frac{F}{x - 1}$ with the values found for $A$ , $B$ , $C$ , $D$ , and $F$ .

$- \frac{1}{x^{2}} - \frac{3}{x} + \frac{7}{{(x - 1)}^{3}} + \frac{- 2}{{(x - 1)}^{2}} + \frac{3}{x - 1}$