Algebra Examples

$(\frac{3}{4} - 5 a) (\frac{9}{16} + \frac{15}{4} a + 25 a^{2})$

Step 1

Combine $\frac{15}{4}$ and $a$ .

$(\frac{3}{4} - 5 a) (\frac{9}{16} + \frac{15 a}{4} + 25 a^{2})$

Step 2

Expand $(\frac{3}{4} - 5 a) (\frac{9}{16} + \frac{15 a}{4} + 25 a^{2})$ by multiplying each term in the first expression by each term in the second expression.

$\frac{3}{4} \cdot \frac{9}{16} + \frac{3}{4} \cdot \frac{15 a}{4} + \frac{3}{4} (25 a^{2}) - 5 a \frac{9}{16} - 5 a \frac{15 a}{4} - 5 a (25 a^{2})$

Step 3

Simplify terms.

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Step 3.1

Simplify each term.

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Step 3.1.1

Multiply $\frac{3}{4} \cdot \frac{9}{16}$ .

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Step 3.1.1.1

Multiply $\frac{3}{4}$ by $\frac{9}{16}$ .

$\frac{3 \cdot 9}{4 \cdot 16} + \frac{3}{4} \cdot \frac{15 a}{4} + \frac{3}{4} (25 a^{2}) - 5 a \frac{9}{16} - 5 a \frac{15 a}{4} - 5 a (25 a^{2})$

Step 3.1.1.2

Multiply $3$ by $9$ .

$\frac{27}{4 \cdot 16} + \frac{3}{4} \cdot \frac{15 a}{4} + \frac{3}{4} (25 a^{2}) - 5 a \frac{9}{16} - 5 a \frac{15 a}{4} - 5 a (25 a^{2})$

Step 3.1.1.3

Multiply $4$ by $16$ .

$\frac{27}{64} + \frac{3}{4} \cdot \frac{15 a}{4} + \frac{3}{4} (25 a^{2}) - 5 a \frac{9}{16} - 5 a \frac{15 a}{4} - 5 a (25 a^{2})$

Step 3.1.2

Multiply $\frac{3}{4} \cdot \frac{15 a}{4}$ .

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Step 3.1.2.1

Multiply $\frac{3}{4}$ by $\frac{15 a}{4}$ .

$\frac{27}{64} + \frac{3 (15 a)}{4 \cdot 4} + \frac{3}{4} (25 a^{2}) - 5 a \frac{9}{16} - 5 a \frac{15 a}{4} - 5 a (25 a^{2})$

Step 3.1.2.2

Multiply $15$ by $3$ .

$\frac{27}{64} + \frac{45 a}{4 \cdot 4} + \frac{3}{4} (25 a^{2}) - 5 a \frac{9}{16} - 5 a \frac{15 a}{4} - 5 a (25 a^{2})$

Step 3.1.2.3

Multiply $4$ by $4$ .

$\frac{27}{64} + \frac{45 a}{16} + \frac{3}{4} (25 a^{2}) - 5 a \frac{9}{16} - 5 a \frac{15 a}{4} - 5 a (25 a^{2})$

Step 3.1.3

Multiply $\frac{3}{4} (25 a^{2})$ .

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Step 3.1.3.1

Combine $25$ and $\frac{3}{4}$ .

$\frac{27}{64} + \frac{45 a}{16} + \frac{25 \cdot 3}{4} a^{2} - 5 a \frac{9}{16} - 5 a \frac{15 a}{4} - 5 a (25 a^{2})$

Step 3.1.3.2

Multiply $25$ by $3$ .

$\frac{27}{64} + \frac{45 a}{16} + \frac{75}{4} a^{2} - 5 a \frac{9}{16} - 5 a \frac{15 a}{4} - 5 a (25 a^{2})$

Step 3.1.3.3

Combine $\frac{75}{4}$ and $a^{2}$ .

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} - 5 a \frac{9}{16} - 5 a \frac{15 a}{4} - 5 a (25 a^{2})$

Step 3.1.4

Multiply $- 5 a \frac{9}{16}$ .

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Step 3.1.4.1

Combine $- 5$ and $\frac{9}{16}$ .

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} + a \frac{- 5 \cdot 9}{16} - 5 a \frac{15 a}{4} - 5 a (25 a^{2})$

Step 3.1.4.2

Multiply $- 5$ by $9$ .

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} + a \frac{- 45}{16} - 5 a \frac{15 a}{4} - 5 a (25 a^{2})$

Step 3.1.4.3

Combine $a$ and $\frac{- 45}{16}$ .

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} + \frac{a \cdot - 45}{16} - 5 a \frac{15 a}{4} - 5 a (25 a^{2})$

Step 3.1.5

Move $- 45$ to the left of $a$ .

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} + \frac{- 45 \cdot a}{16} - 5 a \frac{15 a}{4} - 5 a (25 a^{2})$

Step 3.1.6

Move the negative in front of the fraction.

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} - \frac{45 \cdot a}{16} - 5 a \frac{15 a}{4} - 5 a (25 a^{2})$

Step 3.1.7

Multiply $- 5 a \frac{15 a}{4}$ .

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Step 3.1.7.1

Combine $- 5$ and $\frac{15 a}{4}$ .

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} - \frac{45 a}{16} + a \frac{- 5 (15 a)}{4} - 5 a (25 a^{2})$

Step 3.1.7.2

Multiply $15$ by $- 5$ .

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} - \frac{45 a}{16} + a \frac{- 75 a}{4} - 5 a (25 a^{2})$

Step 3.1.7.3

Combine $a$ and $\frac{- 75 a}{4}$ .

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} - \frac{45 a}{16} + \frac{a (- 75 a)}{4} - 5 a (25 a^{2})$

Step 3.1.7.4

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

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} - \frac{45 a}{16} + \frac{- 75 (a^{1} a)}{4} - 5 a (25 a^{2})$

Step 3.1.7.5

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

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} - \frac{45 a}{16} + \frac{- 75 (a^{1} a^{1})}{4} - 5 a (25 a^{2})$

Step 3.1.7.6

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

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} - \frac{45 a}{16} + \frac{- 75 a^{1 + 1}}{4} - 5 a (25 a^{2})$

Step 3.1.7.7

Add $1$ and $1$ .

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} - \frac{45 a}{16} + \frac{- 75 a^{2}}{4} - 5 a (25 a^{2})$

Step 3.1.8

Move the negative in front of the fraction.

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} - \frac{45 a}{16} - \frac{75 a^{2}}{4} - 5 a (25 a^{2})$

Step 3.1.9

Rewrite using the commutative property of multiplication.

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} - \frac{45 a}{16} - \frac{75 a^{2}}{4} - 5 \cdot 25 a \cdot a^{2}$

Step 3.1.10

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

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Step 3.1.10.1

Move $a^{2}$ .

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} - \frac{45 a}{16} - \frac{75 a^{2}}{4} - 5 \cdot 25 (a^{2} a)$

Step 3.1.10.2

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

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Step 3.1.10.2.1

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

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} - \frac{45 a}{16} - \frac{75 a^{2}}{4} - 5 \cdot 25 (a^{2} a^{1})$

Step 3.1.10.2.2

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

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} - \frac{45 a}{16} - \frac{75 a^{2}}{4} - 5 \cdot 25 a^{2 + 1}$

Step 3.1.10.3

Add $2$ and $1$ .

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} - \frac{45 a}{16} - \frac{75 a^{2}}{4} - 5 \cdot 25 a^{3}$

Step 3.1.11

Multiply $- 5$ by $25$ .

$\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} - \frac{45 a}{16} - \frac{75 a^{2}}{4} - 125 a^{3}$

Step 3.2

Combine the opposite terms in $\frac{27}{64} + \frac{45 a}{16} + \frac{75 a^{2}}{4} - \frac{45 a}{16} - \frac{75 a^{2}}{4} - 125 a^{3}$ .

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Step 3.2.1

Subtract $\frac{45 a}{16}$ from $\frac{45 a}{16}$ .

$\frac{27}{64} + \frac{75 a^{2}}{4} + 0 - \frac{75 a^{2}}{4} - 125 a^{3}$

Step 3.2.2

Add $\frac{27}{64} + \frac{75 a^{2}}{4}$ and $0$ .

$\frac{27}{64} + \frac{75 a^{2}}{4} - \frac{75 a^{2}}{4} - 125 a^{3}$

Step 3.2.3

Subtract $\frac{75 a^{2}}{4}$ from $\frac{75 a^{2}}{4}$ .

$\frac{27}{64} + 0 - 125 a^{3}$

Step 3.2.4

Add $\frac{27}{64}$ and $0$ .

$\frac{27}{64} - 125 a^{3}$