Calculus Examples

$(t^{2} + 7 t + 6) (2 t^{- 2} + 6 t^{- 3})$

Step 1

Differentiate using the Product Rule which states that $\frac{d}{d t} [f (t) g (t)]$ is $f (t) \frac{d}{d t} [g (t)] + g (t) \frac{d}{d t} [f (t)]$ where $f (t) = t^{2} + 7 t + 6$ and $g (t) = 2 t^{- 2} + 6 t^{- 3}$ .

$(t^{2} + 7 t + 6) \frac{d}{d t} [2 t^{- 2} + 6 t^{- 3}] + (2 t^{- 2} + 6 t^{- 3}) \frac{d}{d t} [t^{2} + 7 t + 6]$

Step 2

Differentiate.

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Step 2.1

By the Sum Rule, the derivative of $2 t^{- 2} + 6 t^{- 3}$ with respect to $t$ is $\frac{d}{d t} [2 t^{- 2}] + \frac{d}{d t} [6 t^{- 3}]$ .

$(t^{2} + 7 t + 6) (\frac{d}{d t} [2 t^{- 2}] + \frac{d}{d t} [6 t^{- 3}]) + (2 t^{- 2} + 6 t^{- 3}) \frac{d}{d t} [t^{2} + 7 t + 6]$

Step 2.2

Since $2$ is constant with respect to $t$ , the derivative of $2 t^{- 2}$ with respect to $t$ is $2 \frac{d}{d t} [t^{- 2}]$ .

$(t^{2} + 7 t + 6) (2 \frac{d}{d t} [t^{- 2}] + \frac{d}{d t} [6 t^{- 3}]) + (2 t^{- 2} + 6 t^{- 3}) \frac{d}{d t} [t^{2} + 7 t + 6]$

Step 2.3

Differentiate using the Power Rule which states that $\frac{d}{d t} [t^{n}]$ is $n t^{n - 1}$ where $n = - 2$ .

$(t^{2} + 7 t + 6) (2 (- 2 t^{- 3}) + \frac{d}{d t} [6 t^{- 3}]) + (2 t^{- 2} + 6 t^{- 3}) \frac{d}{d t} [t^{2} + 7 t + 6]$

Step 2.4

Multiply $- 2$ by $2$ .

$(t^{2} + 7 t + 6) (- 4 t^{- 3} + \frac{d}{d t} [6 t^{- 3}]) + (2 t^{- 2} + 6 t^{- 3}) \frac{d}{d t} [t^{2} + 7 t + 6]$

Step 2.5

Since $6$ is constant with respect to $t$ , the derivative of $6 t^{- 3}$ with respect to $t$ is $6 \frac{d}{d t} [t^{- 3}]$ .

$(t^{2} + 7 t + 6) (- 4 t^{- 3} + 6 \frac{d}{d t} [t^{- 3}]) + (2 t^{- 2} + 6 t^{- 3}) \frac{d}{d t} [t^{2} + 7 t + 6]$

Step 2.6

Differentiate using the Power Rule which states that $\frac{d}{d t} [t^{n}]$ is $n t^{n - 1}$ where $n = - 3$ .

$(t^{2} + 7 t + 6) (- 4 t^{- 3} + 6 (- 3 t^{- 4})) + (2 t^{- 2} + 6 t^{- 3}) \frac{d}{d t} [t^{2} + 7 t + 6]$

Step 2.7

Multiply $- 3$ by $6$ .

$(t^{2} + 7 t + 6) (- 4 t^{- 3} - 18 t^{- 4}) + (2 t^{- 2} + 6 t^{- 3}) \frac{d}{d t} [t^{2} + 7 t + 6]$

Step 2.8

By the Sum Rule, the derivative of $t^{2} + 7 t + 6$ with respect to $t$ is $\frac{d}{d t} [t^{2}] + \frac{d}{d t} [7 t] + \frac{d}{d t} [6]$ .

$(t^{2} + 7 t + 6) (- 4 t^{- 3} - 18 t^{- 4}) + (2 t^{- 2} + 6 t^{- 3}) (\frac{d}{d t} [t^{2}] + \frac{d}{d t} [7 t] + \frac{d}{d t} [6])$

Step 2.9

Differentiate using the Power Rule which states that $\frac{d}{d t} [t^{n}]$ is $n t^{n - 1}$ where $n = 2$ .

$(t^{2} + 7 t + 6) (- 4 t^{- 3} - 18 t^{- 4}) + (2 t^{- 2} + 6 t^{- 3}) (2 t + \frac{d}{d t} [7 t] + \frac{d}{d t} [6])$

Step 2.10

Since $7$ is constant with respect to $t$ , the derivative of $7 t$ with respect to $t$ is $7 \frac{d}{d t} [t]$ .

$(t^{2} + 7 t + 6) (- 4 t^{- 3} - 18 t^{- 4}) + (2 t^{- 2} + 6 t^{- 3}) (2 t + 7 \frac{d}{d t} [t] + \frac{d}{d t} [6])$

Step 2.11

Differentiate using the Power Rule which states that $\frac{d}{d t} [t^{n}]$ is $n t^{n - 1}$ where $n = 1$ .

$(t^{2} + 7 t + 6) (- 4 t^{- 3} - 18 t^{- 4}) + (2 t^{- 2} + 6 t^{- 3}) (2 t + 7 \cdot 1 + \frac{d}{d t} [6])$

Step 2.12

Multiply $7$ by $1$ .

$(t^{2} + 7 t + 6) (- 4 t^{- 3} - 18 t^{- 4}) + (2 t^{- 2} + 6 t^{- 3}) (2 t + 7 + \frac{d}{d t} [6])$

Step 2.13

Since $6$ is constant with respect to $t$ , the derivative of $6$ with respect to $t$ is $0$ .

$(t^{2} + 7 t + 6) (- 4 t^{- 3} - 18 t^{- 4}) + (2 t^{- 2} + 6 t^{- 3}) (2 t + 7 + 0)$

Step 2.14

Add $2 t + 7$ and $0$ .

$(t^{2} + 7 t + 6) (- 4 t^{- 3} - 18 t^{- 4}) + (2 t^{- 2} + 6 t^{- 3}) (2 t + 7)$

Step 3

Simplify.

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Step 3.1

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$(t^{2} + 7 t + 6) (- 4 \frac{1}{t^{3}} - 18 t^{- 4}) + (2 t^{- 2} + 6 t^{- 3}) (2 t + 7)$

Step 3.2

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$(t^{2} + 7 t + 6) (- 4 \frac{1}{t^{3}} - 18 \frac{1}{t^{4}}) + (2 t^{- 2} + 6 t^{- 3}) (2 t + 7)$

Step 3.3

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$(t^{2} + 7 t + 6) (- 4 \frac{1}{t^{3}} - 18 \frac{1}{t^{4}}) + (2 \frac{1}{t^{2}} + 6 t^{- 3}) (2 t + 7)$

Step 3.4

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$(t^{2} + 7 t + 6) (- 4 \frac{1}{t^{3}} - 18 \frac{1}{t^{4}}) + (2 \frac{1}{t^{2}} + 6 \frac{1}{t^{3}}) (2 t + 7)$

Step 3.5

Combine terms.

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Step 3.5.1

Combine $- 4$ and $\frac{1}{t^{3}}$ .

$(t^{2} + 7 t + 6) (\frac{- 4}{t^{3}} - 18 \frac{1}{t^{4}}) + (2 \frac{1}{t^{2}} + 6 \frac{1}{t^{3}}) (2 t + 7)$

Step 3.5.2

Move the negative in front of the fraction.

$(t^{2} + 7 t + 6) (- \frac{4}{t^{3}} - 18 \frac{1}{t^{4}}) + (2 \frac{1}{t^{2}} + 6 \frac{1}{t^{3}}) (2 t + 7)$

Step 3.5.3

Combine $- 18$ and $\frac{1}{t^{4}}$ .

$(t^{2} + 7 t + 6) (- \frac{4}{t^{3}} + \frac{- 18}{t^{4}}) + (2 \frac{1}{t^{2}} + 6 \frac{1}{t^{3}}) (2 t + 7)$

Step 3.5.4

Move the negative in front of the fraction.

$(t^{2} + 7 t + 6) (- \frac{4}{t^{3}} - \frac{18}{t^{4}}) + (2 \frac{1}{t^{2}} + 6 \frac{1}{t^{3}}) (2 t + 7)$

Step 3.5.5

Combine $2$ and $\frac{1}{t^{2}}$ .

$(t^{2} + 7 t + 6) (- \frac{4}{t^{3}} - \frac{18}{t^{4}}) + (\frac{2}{t^{2}} + 6 \frac{1}{t^{3}}) (2 t + 7)$

Step 3.5.6

Combine $6$ and $\frac{1}{t^{3}}$ .

$(t^{2} + 7 t + 6) (- \frac{4}{t^{3}} - \frac{18}{t^{4}}) + (\frac{2}{t^{2}} + \frac{6}{t^{3}}) (2 t + 7)$

Step 3.6

Reorder terms.

$(- \frac{4}{t^{3}} - \frac{18}{t^{4}}) (t^{2} + 7 t + 6) + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7

Simplify each term.

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Step 3.7.1

Expand $(- \frac{4}{t^{3}} - \frac{18}{t^{4}}) (t^{2} + 7 t + 6)$ by multiplying each term in the first expression by each term in the second expression.

$- \frac{4}{t^{3}} t^{2} - \frac{4}{t^{3}} (7 t) - \frac{4}{t^{3}} \cdot 6 - \frac{18}{t^{4}} t^{2} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2

Simplify each term.

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Step 3.7.2.1

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

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Step 3.7.2.1.1

Move the leading negative in $- \frac{4}{t^{3}}$ into the numerator.

$\frac{- 4}{t^{3}} t^{2} - \frac{4}{t^{3}} (7 t) - \frac{4}{t^{3}} \cdot 6 - \frac{18}{t^{4}} t^{2} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.1.2

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

$\frac{- 4}{t^{2} t} t^{2} - \frac{4}{t^{3}} (7 t) - \frac{4}{t^{3}} \cdot 6 - \frac{18}{t^{4}} t^{2} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.1.3

Cancel the common factor.

Step 3.7.2.1.4

Rewrite the expression.

$\frac{- 4}{t} - \frac{4}{t^{3}} (7 t) - \frac{4}{t^{3}} \cdot 6 - \frac{18}{t^{4}} t^{2} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.2

Move the negative in front of the fraction.

$- \frac{4}{t} - \frac{4}{t^{3}} (7 t) - \frac{4}{t^{3}} \cdot 6 - \frac{18}{t^{4}} t^{2} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.3

Cancel the common factor of $t$ .

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Step 3.7.2.3.1

Move the leading negative in $- \frac{4}{t^{3}}$ into the numerator.

$- \frac{4}{t} + \frac{- 4}{t^{3}} (7 t) - \frac{4}{t^{3}} \cdot 6 - \frac{18}{t^{4}} t^{2} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.3.2

Factor $t$ out of $t^{3}$ .

$- \frac{4}{t} + \frac{- 4}{t \cdot t^{2}} (7 t) - \frac{4}{t^{3}} \cdot 6 - \frac{18}{t^{4}} t^{2} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.3.3

Factor $t$ out of $7 t$ .

$- \frac{4}{t} + \frac{- 4}{t \cdot t^{2}} (t \cdot 7) - \frac{4}{t^{3}} \cdot 6 - \frac{18}{t^{4}} t^{2} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.3.4

Cancel the common factor.

Step 3.7.2.3.5

Rewrite the expression.

$- \frac{4}{t} + \frac{- 4}{t^{2}} \cdot 7 - \frac{4}{t^{3}} \cdot 6 - \frac{18}{t^{4}} t^{2} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.4

Combine $\frac{- 4}{t^{2}}$ and $7$ .

$- \frac{4}{t} + \frac{- 4 \cdot 7}{t^{2}} - \frac{4}{t^{3}} \cdot 6 - \frac{18}{t^{4}} t^{2} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.5

Multiply $- 4$ by $7$ .

$- \frac{4}{t} + \frac{- 28}{t^{2}} - \frac{4}{t^{3}} \cdot 6 - \frac{18}{t^{4}} t^{2} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.6

Move the negative in front of the fraction.

$- \frac{4}{t} - \frac{28}{t^{2}} - \frac{4}{t^{3}} \cdot 6 - \frac{18}{t^{4}} t^{2} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.7

Multiply $- \frac{4}{t^{3}} \cdot 6$ .

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Step 3.7.2.7.1

Multiply $6$ by $- 1$ .

$- \frac{4}{t} - \frac{28}{t^{2}} - 6 \frac{4}{t^{3}} - \frac{18}{t^{4}} t^{2} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.7.2

Combine $- 6$ and $\frac{4}{t^{3}}$ .

$- \frac{4}{t} - \frac{28}{t^{2}} + \frac{- 6 \cdot 4}{t^{3}} - \frac{18}{t^{4}} t^{2} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.7.3

Multiply $- 6$ by $4$ .

$- \frac{4}{t} - \frac{28}{t^{2}} + \frac{- 24}{t^{3}} - \frac{18}{t^{4}} t^{2} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.8

Move the negative in front of the fraction.

$- \frac{4}{t} - \frac{28}{t^{2}} - \frac{24}{t^{3}} - \frac{18}{t^{4}} t^{2} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.9

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

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Step 3.7.2.9.1

Move the leading negative in $- \frac{18}{t^{4}}$ into the numerator.

$- \frac{4}{t} - \frac{28}{t^{2}} - \frac{24}{t^{3}} + \frac{- 18}{t^{4}} t^{2} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.9.2

Factor $t^{2}$ out of $t^{4}$ .

$- \frac{4}{t} - \frac{28}{t^{2}} - \frac{24}{t^{3}} + \frac{- 18}{t^{2} t^{2}} t^{2} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.9.3

Cancel the common factor.

$- \frac{4}{t} - \frac{28}{t^{2}} - \frac{24}{t^{3}} + \frac{- 18}{t^{2} t^{2}} t^{2} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.9.4

Rewrite the expression.

$- \frac{4}{t} - \frac{28}{t^{2}} - \frac{24}{t^{3}} + \frac{- 18}{t^{2}} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.10

Move the negative in front of the fraction.

$- \frac{4}{t} - \frac{28}{t^{2}} - \frac{24}{t^{3}} - \frac{18}{t^{2}} - \frac{18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.11

Cancel the common factor of $t$ .

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Step 3.7.2.11.1

Move the leading negative in $- \frac{18}{t^{4}}$ into the numerator.

$- \frac{4}{t} - \frac{28}{t^{2}} - \frac{24}{t^{3}} - \frac{18}{t^{2}} + \frac{- 18}{t^{4}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.11.2

Factor $t$ out of $t^{4}$ .

$- \frac{4}{t} - \frac{28}{t^{2}} - \frac{24}{t^{3}} - \frac{18}{t^{2}} + \frac{- 18}{t \cdot t^{3}} (7 t) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.11.3

Factor $t$ out of $7 t$ .

$- \frac{4}{t} - \frac{28}{t^{2}} - \frac{24}{t^{3}} - \frac{18}{t^{2}} + \frac{- 18}{t \cdot t^{3}} (t \cdot 7) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.11.4

Cancel the common factor.

$- \frac{4}{t} - \frac{28}{t^{2}} - \frac{24}{t^{3}} - \frac{18}{t^{2}} + \frac{- 18}{t \cdot t^{3}} (t \cdot 7) - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.11.5

Rewrite the expression.

$- \frac{4}{t} - \frac{28}{t^{2}} - \frac{24}{t^{3}} - \frac{18}{t^{2}} + \frac{- 18}{t^{3}} \cdot 7 - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.12

Combine $\frac{- 18}{t^{3}}$ and $7$ .

$- \frac{4}{t} - \frac{28}{t^{2}} - \frac{24}{t^{3}} - \frac{18}{t^{2}} + \frac{- 18 \cdot 7}{t^{3}} - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.13

Multiply $- 18$ by $7$ .

$- \frac{4}{t} - \frac{28}{t^{2}} - \frac{24}{t^{3}} - \frac{18}{t^{2}} + \frac{- 126}{t^{3}} - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.14

Move the negative in front of the fraction.

$- \frac{4}{t} - \frac{28}{t^{2}} - \frac{24}{t^{3}} - \frac{18}{t^{2}} - \frac{126}{t^{3}} - \frac{18}{t^{4}} \cdot 6 + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.15

Multiply $- \frac{18}{t^{4}} \cdot 6$ .

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Step 3.7.2.15.1

Multiply $6$ by $- 1$ .

$- \frac{4}{t} - \frac{28}{t^{2}} - \frac{24}{t^{3}} - \frac{18}{t^{2}} - \frac{126}{t^{3}} - 6 \frac{18}{t^{4}} + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.15.2

Combine $- 6$ and $\frac{18}{t^{4}}$ .

$- \frac{4}{t} - \frac{28}{t^{2}} - \frac{24}{t^{3}} - \frac{18}{t^{2}} - \frac{126}{t^{3}} + \frac{- 6 \cdot 18}{t^{4}} + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.15.3

Multiply $- 6$ by $18$ .

$- \frac{4}{t} - \frac{28}{t^{2}} - \frac{24}{t^{3}} - \frac{18}{t^{2}} - \frac{126}{t^{3}} + \frac{- 108}{t^{4}} + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.2.16

Move the negative in front of the fraction.

$- \frac{4}{t} - \frac{28}{t^{2}} - \frac{24}{t^{3}} - \frac{18}{t^{2}} - \frac{126}{t^{3}} - \frac{108}{t^{4}} + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.3

Combine the numerators over the common denominator.

$\frac{- 4}{t} + \frac{- 28 - 18}{t^{2}} + \frac{- 24 - 126}{t^{3}} + \frac{- 108}{t^{4}} + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.4

Subtract $18$ from $- 28$ .

$\frac{- 4}{t} + \frac{- 46}{t^{2}} + \frac{- 24 - 126}{t^{3}} + \frac{- 108}{t^{4}} + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.5

Subtract $126$ from $- 24$ .

$\frac{- 4}{t} + \frac{- 46}{t^{2}} + \frac{- 150}{t^{3}} + \frac{- 108}{t^{4}} + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.6

Simplify each term.

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Step 3.7.6.1

Move the negative in front of the fraction.

$- \frac{4}{t} + \frac{- 46}{t^{2}} + \frac{- 150}{t^{3}} + \frac{- 108}{t^{4}} + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.6.2

Move the negative in front of the fraction.

$- \frac{4}{t} - \frac{46}{t^{2}} + \frac{- 150}{t^{3}} + \frac{- 108}{t^{4}} + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.6.3

Move the negative in front of the fraction.

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} + \frac{- 108}{t^{4}} + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.6.4

Move the negative in front of the fraction.

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + (2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.7

Expand $(2 t + 7) (\frac{2}{t^{2}} + \frac{6}{t^{3}})$ using the FOIL Method.

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Step 3.7.7.1

Apply the distributive property.

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + 2 t (\frac{2}{t^{2}} + \frac{6}{t^{3}}) + 7 (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.7.2

Apply the distributive property.

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + 2 t \frac{2}{t^{2}} + 2 t \frac{6}{t^{3}} + 7 (\frac{2}{t^{2}} + \frac{6}{t^{3}})$

Step 3.7.7.3

Apply the distributive property.

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + 2 t \frac{2}{t^{2}} + 2 t \frac{6}{t^{3}} + 7 \frac{2}{t^{2}} + 7 \frac{6}{t^{3}}$

Step 3.7.8

Simplify and combine like terms.

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Step 3.7.8.1

Simplify each term.

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Step 3.7.8.1.1

Cancel the common factor of $t$ .

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Step 3.7.8.1.1.1

Factor $t$ out of $2 t$ .

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + t \cdot 2 \frac{2}{t^{2}} + 2 t \frac{6}{t^{3}} + 7 \frac{2}{t^{2}} + 7 \frac{6}{t^{3}}$

Step 3.7.8.1.1.2

Factor $t$ out of $t^{2}$ .

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + t \cdot 2 \frac{2}{t \cdot t} + 2 t \frac{6}{t^{3}} + 7 \frac{2}{t^{2}} + 7 \frac{6}{t^{3}}$

Step 3.7.8.1.1.3

Cancel the common factor.

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + t \cdot 2 \frac{2}{t \cdot t} + 2 t \frac{6}{t^{3}} + 7 \frac{2}{t^{2}} + 7 \frac{6}{t^{3}}$

Step 3.7.8.1.1.4

Rewrite the expression.

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + 2 \frac{2}{t} + 2 t \frac{6}{t^{3}} + 7 \frac{2}{t^{2}} + 7 \frac{6}{t^{3}}$

Step 3.7.8.1.2

Combine $2$ and $\frac{2}{t}$ .

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + \frac{2 \cdot 2}{t} + 2 t \frac{6}{t^{3}} + 7 \frac{2}{t^{2}} + 7 \frac{6}{t^{3}}$

Step 3.7.8.1.3

Multiply $2$ by $2$ .

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + \frac{4}{t} + 2 t \frac{6}{t^{3}} + 7 \frac{2}{t^{2}} + 7 \frac{6}{t^{3}}$

Step 3.7.8.1.4

Cancel the common factor of $t$ .

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Step 3.7.8.1.4.1

Factor $t$ out of $2 t$ .

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + \frac{4}{t} + t \cdot 2 \frac{6}{t^{3}} + 7 \frac{2}{t^{2}} + 7 \frac{6}{t^{3}}$

Step 3.7.8.1.4.2

Factor $t$ out of $t^{3}$ .

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + \frac{4}{t} + t \cdot 2 \frac{6}{t \cdot t^{2}} + 7 \frac{2}{t^{2}} + 7 \frac{6}{t^{3}}$

Step 3.7.8.1.4.3

Cancel the common factor.

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + \frac{4}{t} + t \cdot 2 \frac{6}{t \cdot t^{2}} + 7 \frac{2}{t^{2}} + 7 \frac{6}{t^{3}}$

Step 3.7.8.1.4.4

Rewrite the expression.

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + \frac{4}{t} + 2 \frac{6}{t^{2}} + 7 \frac{2}{t^{2}} + 7 \frac{6}{t^{3}}$

Step 3.7.8.1.5

Combine $2$ and $\frac{6}{t^{2}}$ .

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + \frac{4}{t} + \frac{2 \cdot 6}{t^{2}} + 7 \frac{2}{t^{2}} + 7 \frac{6}{t^{3}}$

Step 3.7.8.1.6

Multiply $2$ by $6$ .

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + \frac{4}{t} + \frac{12}{t^{2}} + 7 \frac{2}{t^{2}} + 7 \frac{6}{t^{3}}$

Step 3.7.8.1.7

Multiply $7 \frac{2}{t^{2}}$ .

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Step 3.7.8.1.7.1

Combine $7$ and $\frac{2}{t^{2}}$ .

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + \frac{4}{t} + \frac{12}{t^{2}} + \frac{7 \cdot 2}{t^{2}} + 7 \frac{6}{t^{3}}$

Step 3.7.8.1.7.2

Multiply $7$ by $2$ .

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + \frac{4}{t} + \frac{12}{t^{2}} + \frac{14}{t^{2}} + 7 \frac{6}{t^{3}}$

Step 3.7.8.1.8

Multiply $7 \frac{6}{t^{3}}$ .

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Step 3.7.8.1.8.1

Combine $7$ and $\frac{6}{t^{3}}$ .

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + \frac{4}{t} + \frac{12}{t^{2}} + \frac{14}{t^{2}} + \frac{7 \cdot 6}{t^{3}}$

Step 3.7.8.1.8.2

Multiply $7$ by $6$ .

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + \frac{4}{t} + \frac{12}{t^{2}} + \frac{14}{t^{2}} + \frac{42}{t^{3}}$

Step 3.7.8.2

Combine the numerators over the common denominator.

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + \frac{4}{t} + \frac{12 + 14}{t^{2}} + \frac{42}{t^{3}}$

Step 3.7.8.3

Add $12$ and $14$ .

$- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + \frac{4}{t} + \frac{26}{t^{2}} + \frac{42}{t^{3}}$

Step 3.8

Combine the opposite terms in $- \frac{4}{t} - \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + \frac{4}{t} + \frac{26}{t^{2}} + \frac{42}{t^{3}}$ .

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Step 3.8.1

Add $- \frac{4}{t}$ and $\frac{4}{t}$ .

$- \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + 0 + \frac{26}{t^{2}} + \frac{42}{t^{3}}$

Step 3.8.2

Add $- \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}}$ and $0$ .

$- \frac{46}{t^{2}} - \frac{150}{t^{3}} - \frac{108}{t^{4}} + \frac{26}{t^{2}} + \frac{42}{t^{3}}$

Step 3.9

Combine the numerators over the common denominator.

$\frac{- 46 + 26}{t^{2}} + \frac{- 150 + 42}{t^{3}} + \frac{- 108}{t^{4}}$

Step 3.10

Add $- 46$ and $26$ .

$\frac{- 20}{t^{2}} + \frac{- 150 + 42}{t^{3}} + \frac{- 108}{t^{4}}$

Step 3.11

Add $- 150$ and $42$ .

$\frac{- 20}{t^{2}} + \frac{- 108}{t^{3}} + \frac{- 108}{t^{4}}$

Step 3.12

Simplify each term.

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Step 3.12.1

Move the negative in front of the fraction.

$- \frac{20}{t^{2}} + \frac{- 108}{t^{3}} + \frac{- 108}{t^{4}}$

Step 3.12.2

Move the negative in front of the fraction.

$- \frac{20}{t^{2}} - \frac{108}{t^{3}} + \frac{- 108}{t^{4}}$

Step 3.12.3

Move the negative in front of the fraction.

$- \frac{20}{t^{2}} - \frac{108}{t^{3}} - \frac{108}{t^{4}}$