Basic Math Examples

$\frac{8 v + 2}{3 v^{2} - 3 v - 18} + \frac{9}{3 v^{2} - 12 v + 9}$

Step 1

Simplify each term.

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Step 1.1

Factor $2$ out of $8 v + 2$ .

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Step 1.1.1

Factor $2$ out of $8 v$ .

$\frac{2 (4 v) + 2}{3 v^{2} - 3 v - 18} + \frac{9}{3 v^{2} - 12 v + 9}$

Step 1.1.2

Factor $2$ out of $2$ .

$\frac{2 (4 v) + 2 (1)}{3 v^{2} - 3 v - 18} + \frac{9}{3 v^{2} - 12 v + 9}$

Step 1.1.3

Factor $2$ out of $2 (4 v) + 2 (1)$ .

$\frac{2 (4 v + 1)}{3 v^{2} - 3 v - 18} + \frac{9}{3 v^{2} - 12 v + 9}$

Step 1.2

Simplify the denominator.

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Step 1.2.1

Factor $3$ out of $3 v^{2} - 3 v - 18$ .

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Step 1.2.1.1

Factor $3$ out of $3 v^{2}$ .

$\frac{2 (4 v + 1)}{3 (v^{2}) - 3 v - 18} + \frac{9}{3 v^{2} - 12 v + 9}$

Step 1.2.1.2

Factor $3$ out of $- 3 v$ .

$\frac{2 (4 v + 1)}{3 (v^{2}) + 3 (- v) - 18} + \frac{9}{3 v^{2} - 12 v + 9}$

Step 1.2.1.3

Factor $3$ out of $- 18$ .

$\frac{2 (4 v + 1)}{3 (v^{2}) + 3 (- v) + 3 (- 6)} + \frac{9}{3 v^{2} - 12 v + 9}$

Step 1.2.1.4

Factor $3$ out of $3 (v^{2}) + 3 (- v)$ .

$\frac{2 (4 v + 1)}{3 (v^{2} - v) + 3 (- 6)} + \frac{9}{3 v^{2} - 12 v + 9}$

Step 1.2.1.5

Factor $3$ out of $3 (v^{2} - v) + 3 (- 6)$ .

$\frac{2 (4 v + 1)}{3 (v^{2} - v - 6)} + \frac{9}{3 v^{2} - 12 v + 9}$

Step 1.2.2

Factor $v^{2} - v - 6$ using the AC method.

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Step 1.2.2.1

Consider the form $x^{2} + b x + c$ . Find a pair of integers whose product is $c$ and whose sum is $b$ . In this case, whose product is $- 6$ and whose sum is $- 1$ .

$- 3, 2$

Step 1.2.2.2

Write the factored form using these integers.

$\frac{2 (4 v + 1)}{3 ((v - 3) (v + 2))} + \frac{9}{3 v^{2} - 12 v + 9}$

$\frac{2 (4 v + 1)}{3 (v - 3) (v + 2)} + \frac{9}{3 v^{2} - 12 v + 9}$

Step 1.3

Cancel the common factor of $9$ and $3 v^{2} - 12 v + 9$ .

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Step 1.3.1

Factor $3$ out of $9$ .

$\frac{2 (4 v + 1)}{3 (v - 3) (v + 2)} + \frac{3 \cdot 3}{3 v^{2} - 12 v + 9}$

Step 1.3.2

Cancel the common factors.

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Step 1.3.2.1

Factor $3$ out of $3 v^{2}$ .

$\frac{2 (4 v + 1)}{3 (v - 3) (v + 2)} + \frac{3 \cdot 3}{3 (v^{2}) - 12 v + 9}$

Step 1.3.2.2

Factor $3$ out of $- 12 v$ .

$\frac{2 (4 v + 1)}{3 (v - 3) (v + 2)} + \frac{3 \cdot 3}{3 (v^{2}) + 3 (- 4 v) + 9}$

Step 1.3.2.3

Factor $3$ out of $3 (v^{2}) + 3 (- 4 v)$ .

$\frac{2 (4 v + 1)}{3 (v - 3) (v + 2)} + \frac{3 \cdot 3}{3 (v^{2} - 4 v) + 9}$

Step 1.3.2.4

Factor $3$ out of $9$ .

$\frac{2 (4 v + 1)}{3 (v - 3) (v + 2)} + \frac{3 \cdot 3}{3 (v^{2} - 4 v) + 3 (3)}$

Step 1.3.2.5

Factor $3$ out of $3 (v^{2} - 4 v) + 3 (3)$ .

$\frac{2 (4 v + 1)}{3 (v - 3) (v + 2)} + \frac{3 \cdot 3}{3 (v^{2} - 4 v + 3)}$

Step 1.3.2.6

Cancel the common factor.

$\frac{2 (4 v + 1)}{3 (v - 3) (v + 2)} + \frac{3 \cdot 3}{3 (v^{2} - 4 v + 3)}$

Step 1.3.2.7

Rewrite the expression.

$\frac{2 (4 v + 1)}{3 (v - 3) (v + 2)} + \frac{3}{v^{2} - 4 v + 3}$

Step 1.4

Factor $v^{2} - 4 v + 3$ using the AC method.

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Step 1.4.1

Consider the form $x^{2} + b x + c$ . Find a pair of integers whose product is $c$ and whose sum is $b$ . In this case, whose product is $3$ and whose sum is $- 4$ .

$- 3, - 1$

Step 1.4.2

Write the factored form using these integers.

$\frac{2 (4 v + 1)}{3 (v - 3) (v + 2)} + \frac{3}{(v - 3) (v - 1)}$

Step 2

To write $\frac{2 (4 v + 1)}{3 (v - 3) (v + 2)}$ as a fraction with a common denominator, multiply by $\frac{v - 1}{v - 1}$ .

$\frac{2 (4 v + 1)}{3 (v - 3) (v + 2)} \cdot \frac{v - 1}{v - 1} + \frac{3}{(v - 3) (v - 1)}$

Step 3

To write $\frac{3}{(v - 3) (v - 1)}$ as a fraction with a common denominator, multiply by $\frac{3 (v + 2)}{3 (v + 2)}$ .

$\frac{2 (4 v + 1)}{3 (v - 3) (v + 2)} \cdot \frac{v - 1}{v - 1} + \frac{3}{(v - 3) (v - 1)} \cdot \frac{3 (v + 2)}{3 (v + 2)}$

Step 4

Write each expression with a common denominator of $3 (v - 3) (v + 2) (v - 1)$ , by multiplying each by an appropriate factor of $1$ .

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Step 4.1

Multiply $\frac{2 (4 v + 1)}{3 (v - 3) (v + 2)}$ by $\frac{v - 1}{v - 1}$ .

$\frac{2 (4 v + 1) (v - 1)}{3 (v - 3) (v + 2) (v - 1)} + \frac{3}{(v - 3) (v - 1)} \cdot \frac{3 (v + 2)}{3 (v + 2)}$

Step 4.2

Multiply $\frac{3}{(v - 3) (v - 1)}$ by $\frac{3 (v + 2)}{3 (v + 2)}$ .

$\frac{2 (4 v + 1) (v - 1)}{3 (v - 3) (v + 2) (v - 1)} + \frac{3 (3 (v + 2))}{(v - 3) (v - 1) (3 (v + 2))}$

Step 4.3

Reorder the factors of $3 (v - 3) (v + 2) (v - 1)$ .

$\frac{2 (4 v + 1) (v - 1)}{3 (v + 2) (v - 1) (v - 3)} + \frac{3 (3 (v + 2))}{(v - 3) (v - 1) (3 (v + 2))}$

Step 4.4

Reorder the factors of $(v - 3) (v - 1) (3 (v + 2))$ .

$\frac{2 (4 v + 1) (v - 1)}{3 (v + 2) (v - 1) (v - 3)} + \frac{3 (3 (v + 2))}{3 (v + 2) (v - 1) (v - 3)}$

Step 5

Combine the numerators over the common denominator.

$\frac{2 (4 v + 1) (v - 1) + 3 (3 (v + 2))}{3 (v + 2) (v - 1) (v - 3)}$

Step 6

Simplify the numerator.

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Step 6.1

Apply the distributive property.

$\frac{(2 (4 v) + 2 \cdot 1) (v - 1) + 3 \cdot 3 (v + 2)}{3 (v + 2) (v - 1) (v - 3)}$

Step 6.2

Multiply $4$ by $2$ .

$\frac{(8 v + 2 \cdot 1) (v - 1) + 3 \cdot 3 (v + 2)}{3 (v + 2) (v - 1) (v - 3)}$

Step 6.3

Multiply $2$ by $1$ .

$\frac{(8 v + 2) (v - 1) + 3 \cdot 3 (v + 2)}{3 (v + 2) (v - 1) (v - 3)}$

Step 6.4

Expand $(8 v + 2) (v - 1)$ using the FOIL Method.

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Step 6.4.1

Apply the distributive property.

$\frac{8 v (v - 1) + 2 (v - 1) + 3 \cdot 3 (v + 2)}{3 (v + 2) (v - 1) (v - 3)}$

Step 6.4.2

Apply the distributive property.

$\frac{8 v \cdot v + 8 v \cdot - 1 + 2 (v - 1) + 3 \cdot 3 (v + 2)}{3 (v + 2) (v - 1) (v - 3)}$

Step 6.4.3

Apply the distributive property.

$\frac{8 v \cdot v + 8 v \cdot - 1 + 2 v + 2 \cdot - 1 + 3 \cdot 3 (v + 2)}{3 (v + 2) (v - 1) (v - 3)}$

Step 6.5

Simplify and combine like terms.

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Step 6.5.1

Simplify each term.

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Step 6.5.1.1

Multiply $v$ by $v$ by adding the exponents.

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Step 6.5.1.1.1

Move $v$ .

$\frac{8 (v \cdot v) + 8 v \cdot - 1 + 2 v + 2 \cdot - 1 + 3 \cdot 3 (v + 2)}{3 (v + 2) (v - 1) (v - 3)}$

Step 6.5.1.1.2

Multiply $v$ by $v$ .

$\frac{8 v^{2} + 8 v \cdot - 1 + 2 v + 2 \cdot - 1 + 3 \cdot 3 (v + 2)}{3 (v + 2) (v - 1) (v - 3)}$

Step 6.5.1.2

Multiply $- 1$ by $8$ .

$\frac{8 v^{2} - 8 v + 2 v + 2 \cdot - 1 + 3 \cdot 3 (v + 2)}{3 (v + 2) (v - 1) (v - 3)}$

Step 6.5.1.3

Multiply $2$ by $- 1$ .

$\frac{8 v^{2} - 8 v + 2 v - 2 + 3 \cdot 3 (v + 2)}{3 (v + 2) (v - 1) (v - 3)}$

Step 6.5.2

Add $- 8 v$ and $2 v$ .

$\frac{8 v^{2} - 6 v - 2 + 3 \cdot 3 (v + 2)}{3 (v + 2) (v - 1) (v - 3)}$

Step 6.6

Multiply $3$ by $3$ .

$\frac{8 v^{2} - 6 v - 2 + 9 (v + 2)}{3 (v + 2) (v - 1) (v - 3)}$

Step 6.7

Apply the distributive property.

$\frac{8 v^{2} - 6 v - 2 + 9 v + 9 \cdot 2}{3 (v + 2) (v - 1) (v - 3)}$

Step 6.8

Multiply $9$ by $2$ .

$\frac{8 v^{2} - 6 v - 2 + 9 v + 18}{3 (v + 2) (v - 1) (v - 3)}$

Step 6.9

Add $- 6 v$ and $9 v$ .

$\frac{8 v^{2} + 3 v - 2 + 18}{3 (v + 2) (v - 1) (v - 3)}$

Step 6.10

Add $- 2$ and $18$ .

$\frac{8 v^{2} + 3 v + 16}{3 (v + 2) (v - 1) (v - 3)}$