Finite Math Examples

$\frac{(6 x^{2} + x) (7) - (7 x - 8) (12 x + 1)}{{(6 x^{2} + x)}^{2}}$

Step 1

Simplify the numerator.

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Step 1.1

Apply the distributive property.

$\frac{6 x^{2} \cdot 7 + x \cdot 7 - (7 x - 8) (12 x + 1)}{{(6 x^{2} + x)}^{2}}$

Step 1.2

Multiply $7$ by $6$ .

$\frac{42 x^{2} + x \cdot 7 - (7 x - 8) (12 x + 1)}{{(6 x^{2} + x)}^{2}}$

Step 1.3

Move $7$ to the left of $x$ .

$\frac{42 x^{2} + 7 \cdot x - (7 x - 8) (12 x + 1)}{{(6 x^{2} + x)}^{2}}$

Step 1.4

Apply the distributive property.

$\frac{42 x^{2} + 7 x + (- (7 x) - - 8) (12 x + 1)}{{(6 x^{2} + x)}^{2}}$

Step 1.5

Multiply $7$ by $- 1$ .

$\frac{42 x^{2} + 7 x + (- 7 x - - 8) (12 x + 1)}{{(6 x^{2} + x)}^{2}}$

Step 1.6

Multiply $- 1$ by $- 8$ .

$\frac{42 x^{2} + 7 x + (- 7 x + 8) (12 x + 1)}{{(6 x^{2} + x)}^{2}}$

Step 1.7

Expand $(- 7 x + 8) (12 x + 1)$ using the FOIL Method.

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Step 1.7.1

Apply the distributive property.

$\frac{42 x^{2} + 7 x - 7 x (12 x + 1) + 8 (12 x + 1)}{{(6 x^{2} + x)}^{2}}$

Step 1.7.2

Apply the distributive property.

$\frac{42 x^{2} + 7 x - 7 x (12 x) - 7 x \cdot 1 + 8 (12 x + 1)}{{(6 x^{2} + x)}^{2}}$

Step 1.7.3

Apply the distributive property.

$\frac{42 x^{2} + 7 x - 7 x (12 x) - 7 x \cdot 1 + 8 (12 x) + 8 \cdot 1}{{(6 x^{2} + x)}^{2}}$

Step 1.8

Simplify and combine like terms.

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Step 1.8.1

Simplify each term.

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Step 1.8.1.1

Rewrite using the commutative property of multiplication.

$\frac{42 x^{2} + 7 x - 7 \cdot 12 x \cdot x - 7 x \cdot 1 + 8 (12 x) + 8 \cdot 1}{{(6 x^{2} + x)}^{2}}$

Step 1.8.1.2

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

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Step 1.8.1.2.1

Move $x$ .

$\frac{42 x^{2} + 7 x - 7 \cdot 12 (x \cdot x) - 7 x \cdot 1 + 8 (12 x) + 8 \cdot 1}{{(6 x^{2} + x)}^{2}}$

Step 1.8.1.2.2

Multiply $x$ by $x$ .

$\frac{42 x^{2} + 7 x - 7 \cdot 12 x^{2} - 7 x \cdot 1 + 8 (12 x) + 8 \cdot 1}{{(6 x^{2} + x)}^{2}}$

Step 1.8.1.3

Multiply $- 7$ by $12$ .

$\frac{42 x^{2} + 7 x - 84 x^{2} - 7 x \cdot 1 + 8 (12 x) + 8 \cdot 1}{{(6 x^{2} + x)}^{2}}$

Step 1.8.1.4

Multiply $- 7$ by $1$ .

$\frac{42 x^{2} + 7 x - 84 x^{2} - 7 x + 8 (12 x) + 8 \cdot 1}{{(6 x^{2} + x)}^{2}}$

Step 1.8.1.5

Multiply $12$ by $8$ .

$\frac{42 x^{2} + 7 x - 84 x^{2} - 7 x + 96 x + 8 \cdot 1}{{(6 x^{2} + x)}^{2}}$

Step 1.8.1.6

Multiply $8$ by $1$ .

$\frac{42 x^{2} + 7 x - 84 x^{2} - 7 x + 96 x + 8}{{(6 x^{2} + x)}^{2}}$

Step 1.8.2

Add $- 7 x$ and $96 x$ .

$\frac{42 x^{2} + 7 x - 84 x^{2} + 89 x + 8}{{(6 x^{2} + x)}^{2}}$

Step 1.9

Subtract $84 x^{2}$ from $42 x^{2}$ .

$\frac{- 42 x^{2} + 7 x + 89 x + 8}{{(6 x^{2} + x)}^{2}}$

Step 1.10

Add $7 x$ and $89 x$ .

$\frac{- 42 x^{2} + 96 x + 8}{{(6 x^{2} + x)}^{2}}$

Step 1.11

Factor $2$ out of $- 42 x^{2} + 96 x + 8$ .

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Step 1.11.1

Factor $2$ out of $- 42 x^{2}$ .

$\frac{2 (- 21 x^{2}) + 96 x + 8}{{(6 x^{2} + x)}^{2}}$

Step 1.11.2

Factor $2$ out of $96 x$ .

$\frac{2 (- 21 x^{2}) + 2 (48 x) + 8}{{(6 x^{2} + x)}^{2}}$

Step 1.11.3

Factor $2$ out of $8$ .

$\frac{2 (- 21 x^{2}) + 2 (48 x) + 2 (4)}{{(6 x^{2} + x)}^{2}}$

Step 1.11.4

Factor $2$ out of $2 (- 21 x^{2}) + 2 (48 x)$ .

$\frac{2 (- 21 x^{2} + 48 x) + 2 (4)}{{(6 x^{2} + x)}^{2}}$

Step 1.11.5

Factor $2$ out of $2 (- 21 x^{2} + 48 x) + 2 (4)$ .

$\frac{2 (- 21 x^{2} + 48 x + 4)}{{(6 x^{2} + x)}^{2}}$

Step 2

Simplify the denominator.

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Step 2.1

Factor $x$ out of $6 x^{2} + x$ .

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Step 2.1.1

Factor $x$ out of $6 x^{2}$ .

$\frac{2 (- 21 x^{2} + 48 x + 4)}{{(x (6 x) + x)}^{2}}$

Step 2.1.2

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

$\frac{2 (- 21 x^{2} + 48 x + 4)}{{(x (6 x) + x^{1})}^{2}}$

Step 2.1.3

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

$\frac{2 (- 21 x^{2} + 48 x + 4)}{{(x (6 x) + x \cdot 1)}^{2}}$

Step 2.1.4

Factor $x$ out of $x (6 x) + x \cdot 1$ .

$\frac{2 (- 21 x^{2} + 48 x + 4)}{{(x (6 x + 1))}^{2}}$

Step 2.2

Apply the product rule to $x (6 x + 1)$ .

$\frac{2 (- 21 x^{2} + 48 x + 4)}{x^{2} {(6 x + 1)}^{2}}$

Step 3

Simplify with factoring out.

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Step 3.1

Factor $- 1$ out of $- 21 x^{2}$ .

$\frac{2 (- (21 x^{2}) + 48 x + 4)}{x^{2} {(6 x + 1)}^{2}}$

Step 3.2

Factor $- 1$ out of $48 x$ .

$\frac{2 (- (21 x^{2}) - (- 48 x) + 4)}{x^{2} {(6 x + 1)}^{2}}$

Step 3.3

Factor $- 1$ out of $- (21 x^{2}) - (- 48 x)$ .

$\frac{2 (- (21 x^{2} - 48 x) + 4)}{x^{2} {(6 x + 1)}^{2}}$

Step 3.4

Rewrite $4$ as $- 1 (- 4)$ .

$\frac{2 (- (21 x^{2} - 48 x) - 1 (- 4))}{x^{2} {(6 x + 1)}^{2}}$

Step 3.5

Factor $- 1$ out of $- (21 x^{2} - 48 x) - 1 (- 4)$ .

$\frac{2 (- (21 x^{2} - 48 x - 4))}{x^{2} {(6 x + 1)}^{2}}$

Step 3.6

Simplify the expression.

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Step 3.6.1

Rewrite $- (21 x^{2} - 48 x - 4)$ as $- 1 (21 x^{2} - 48 x - 4)$ .

$\frac{2 (- 1 (21 x^{2} - 48 x - 4))}{x^{2} {(6 x + 1)}^{2}}$

Step 3.6.2

Move the negative in front of the fraction.

$- \frac{2 (21 x^{2} - 48 x - 4)}{x^{2} {(6 x + 1)}^{2}}$