Pre-Algebra Examples

$\frac{7 + x^{7} y^{3} \sqrt{14 y}}{3 y^{3} \sqrt{x}}$

Step 1

Multiply $\frac{7 + x^{7} y^{3} \sqrt{14 y}}{3 y^{3} \sqrt{x}}$ by $\frac{\sqrt{x}}{\sqrt{x}}$ .

$\frac{7 + x^{7} y^{3} \sqrt{14 y}}{3 y^{3} \sqrt{x}} \cdot \frac{\sqrt{x}}{\sqrt{x}}$

Step 2

Combine and simplify the denominator.

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Step 2.1

Multiply $\frac{7 + x^{7} y^{3} \sqrt{14 y}}{3 y^{3} \sqrt{x}}$ by $\frac{\sqrt{x}}{\sqrt{x}}$ .

$\frac{(7 + x^{7} y^{3} \sqrt{14 y}) \sqrt{x}}{3 y^{3} \sqrt{x} \sqrt{x}}$

Step 2.2

Move $\sqrt{x}$ .

$\frac{(7 + x^{7} y^{3} \sqrt{14 y}) \sqrt{x}}{3 y^{3} (\sqrt{x} \sqrt{x})}$

Step 2.3

Raise $\sqrt{x}$ to the power of $1$ .

$\frac{(7 + x^{7} y^{3} \sqrt{14 y}) \sqrt{x}}{3 y^{3} ({\sqrt{x}}^{1} \sqrt{x})}$

Step 2.4

Raise $\sqrt{x}$ to the power of $1$ .

$\frac{(7 + x^{7} y^{3} \sqrt{14 y}) \sqrt{x}}{3 y^{3} ({\sqrt{x}}^{1} {\sqrt{x}}^{1})}$

Step 2.5

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

$\frac{(7 + x^{7} y^{3} \sqrt{14 y}) \sqrt{x}}{3 y^{3} {\sqrt{x}}^{1 + 1}}$

Step 2.6

Add $1$ and $1$ .

$\frac{(7 + x^{7} y^{3} \sqrt{14 y}) \sqrt{x}}{3 y^{3} {\sqrt{x}}^{2}}$

Step 2.7

Rewrite ${\sqrt{x}}^{2}$ as $x$ .

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Step 2.7.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{x}$ as $x^{\frac{1}{2}}$ .

$\frac{(7 + x^{7} y^{3} \sqrt{14 y}) \sqrt{x}}{3 y^{3} {(x^{\frac{1}{2}})}^{2}}$

Step 2.7.2

Apply the power rule and multiply exponents, ${(a^{m})}^{n} = a^{m n}$ .

$\frac{(7 + x^{7} y^{3} \sqrt{14 y}) \sqrt{x}}{3 y^{3} x^{\frac{1}{2} \cdot 2}}$

Step 2.7.3

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

$\frac{(7 + x^{7} y^{3} \sqrt{14 y}) \sqrt{x}}{3 y^{3} x^{\frac{2}{2}}}$

Step 2.7.4

Cancel the common factor of $2$ .

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Step 2.7.4.1

Cancel the common factor.

$\frac{(7 + x^{7} y^{3} \sqrt{14 y}) \sqrt{x}}{3 y^{3} x^{\frac{2}{2}}}$

Step 2.7.4.2

Rewrite the expression.

$\frac{(7 + x^{7} y^{3} \sqrt{14 y}) \sqrt{x}}{3 y^{3} x^{1}}$

Step 2.7.5

Simplify.

$\frac{(7 + x^{7} y^{3} \sqrt{14 y}) \sqrt{x}}{3 y^{3} x}$

Step 3

Apply the distributive property.

$\frac{7 \sqrt{x} + x^{7} y^{3} \sqrt{14 y} \sqrt{x}}{3 y^{3} x}$

Step 4

Combine using the product rule for radicals.

$\frac{7 \sqrt{x} + x^{7} y^{3} \sqrt{x \cdot 14 y}}{3 y^{3} x}$

Step 5

Reorder factors in $7 \sqrt{x} + x^{7} y^{3} \sqrt{x \cdot 14 y}$ .

$\frac{7 \sqrt{x} + x^{7} y^{3} \sqrt{14 x y}}{3 y^{3} x}$

Step 6

Simplify the numerator.

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Step 6.1

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{x}$ as $x^{\frac{1}{2}}$ .

$\frac{7 x^{\frac{1}{2}} + x^{7} y^{3} \sqrt{14 x y}}{3 y^{3} x}$

Step 6.2

Use $\sqrt[n]{a^{x}} = a^{\frac{x}{n}}$ to rewrite $\sqrt{14 x y}$ as ${(14 x y)}^{\frac{1}{2}}$ .

$\frac{7 x^{\frac{1}{2}} + x^{7} y^{3} {(14 x y)}^{\frac{1}{2}}}{3 y^{3} x}$

Step 6.3

Factor $x^{\frac{1}{2}}$ out of $7 x^{\frac{1}{2}} + x^{7} y^{3} {(14 x y)}^{\frac{1}{2}}$ .

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Step 6.3.1

Factor $x^{\frac{1}{2}}$ out of $7 x^{\frac{1}{2}}$ .

$\frac{x^{\frac{1}{2}} \cdot 7 + x^{7} y^{3} {(14 x y)}^{\frac{1}{2}}}{3 y^{3} x}$

Step 6.3.2

Factor $x^{\frac{1}{2}}$ out of $x^{7} y^{3} {(14 x y)}^{\frac{1}{2}}$ .

$\frac{x^{\frac{1}{2}} \cdot 7 + x^{\frac{1}{2}} (x^{\frac{13}{2}} y^{3} {(14 x y)}^{\frac{1}{2}})}{3 y^{3} x}$

Step 6.3.3

Factor $x^{\frac{1}{2}}$ out of $x^{\frac{1}{2}} \cdot 7 + x^{\frac{1}{2}} (x^{\frac{13}{2}} y^{3} {(14 x y)}^{\frac{1}{2}})$ .

$\frac{x^{\frac{1}{2}} (7 + x^{\frac{13}{2}} y^{3} {(14 x y)}^{\frac{1}{2}})}{3 y^{3} x}$

Step 6.4

Use the power rule ${(a b)}^{n} = a^{n} b^{n}$ to distribute the exponent.

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Step 6.4.1

Apply the product rule to $14 x y$ .

$\frac{x^{\frac{1}{2}} (7 + x^{\frac{13}{2}} y^{3} ({(14 x)}^{\frac{1}{2}} y^{\frac{1}{2}}))}{3 y^{3} x}$

Step 6.4.2

Apply the product rule to $14 x$ .

$\frac{x^{\frac{1}{2}} (7 + x^{\frac{13}{2}} y^{3} (14^{\frac{1}{2}} x^{\frac{1}{2}} y^{\frac{1}{2}}))}{3 y^{3} x}$

Step 6.5

Rewrite using the commutative property of multiplication.

$\frac{x^{\frac{1}{2}} (7 + 14^{\frac{1}{2}} x^{\frac{13}{2}} y^{3} (x^{\frac{1}{2}} y^{\frac{1}{2}}))}{3 y^{3} x}$

Step 6.6

Multiply $x^{\frac{13}{2}}$ by $x^{\frac{1}{2}}$ by adding the exponents.

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Step 6.6.1

Move $x^{\frac{1}{2}}$ .

$\frac{x^{\frac{1}{2}} (7 + 14^{\frac{1}{2}} (x^{\frac{1}{2}} x^{\frac{13}{2}}) y^{3} y^{\frac{1}{2}})}{3 y^{3} x}$

Step 6.6.2

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

$\frac{x^{\frac{1}{2}} (7 + 14^{\frac{1}{2}} x^{\frac{1}{2} + \frac{13}{2}} y^{3} y^{\frac{1}{2}})}{3 y^{3} x}$

Step 6.6.3

Combine the numerators over the common denominator.

$\frac{x^{\frac{1}{2}} (7 + 14^{\frac{1}{2}} x^{\frac{1 + 13}{2}} y^{3} y^{\frac{1}{2}})}{3 y^{3} x}$

Step 6.6.4

Add $1$ and $13$ .

$\frac{x^{\frac{1}{2}} (7 + 14^{\frac{1}{2}} x^{\frac{14}{2}} y^{3} y^{\frac{1}{2}})}{3 y^{3} x}$

Step 6.6.5

Divide $14$ by $2$ .

$\frac{x^{\frac{1}{2}} (7 + 14^{\frac{1}{2}} x^{7} y^{3} y^{\frac{1}{2}})}{3 y^{3} x}$

Step 6.7

Multiply $y^{3}$ by $y^{\frac{1}{2}}$ by adding the exponents.

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Step 6.7.1

Move $y^{\frac{1}{2}}$ .

$\frac{x^{\frac{1}{2}} (7 + 14^{\frac{1}{2}} x^{7} (y^{\frac{1}{2}} y^{3}))}{3 y^{3} x}$

Step 6.7.2

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

$\frac{x^{\frac{1}{2}} (7 + 14^{\frac{1}{2}} x^{7} y^{\frac{1}{2} + 3})}{3 y^{3} x}$

Step 6.7.3

To write $3$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$\frac{x^{\frac{1}{2}} (7 + 14^{\frac{1}{2}} x^{7} y^{\frac{1}{2} + 3 \cdot \frac{2}{2}})}{3 y^{3} x}$

Step 6.7.4

Combine $3$ and $\frac{2}{2}$ .

$\frac{x^{\frac{1}{2}} (7 + 14^{\frac{1}{2}} x^{7} y^{\frac{1}{2} + \frac{3 \cdot 2}{2}})}{3 y^{3} x}$

Step 6.7.5

Combine the numerators over the common denominator.

$\frac{x^{\frac{1}{2}} (7 + 14^{\frac{1}{2}} x^{7} y^{\frac{1 + 3 \cdot 2}{2}})}{3 y^{3} x}$

Step 6.7.6

Simplify the numerator.

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Step 6.7.6.1

Multiply $3$ by $2$ .

$\frac{x^{\frac{1}{2}} (7 + 14^{\frac{1}{2}} x^{7} y^{\frac{1 + 6}{2}})}{3 y^{3} x}$

Step 6.7.6.2

Add $1$ and $6$ .

$\frac{x^{\frac{1}{2}} (7 + 14^{\frac{1}{2}} x^{7} y^{\frac{7}{2}})}{3 y^{3} x}$

Step 7

Move $x^{\frac{1}{2}}$ to the denominator using the negative exponent rule $b^{n} = \frac{1}{b^{- n}}$ .

$\frac{7 + 14^{\frac{1}{2}} x^{7} y^{\frac{7}{2}}}{3 y^{3} x \cdot x^{- \frac{1}{2}}}$

Step 8

Multiply $x$ by $x^{- \frac{1}{2}}$ by adding the exponents.

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Step 8.1

Move $x^{- \frac{1}{2}}$ .

$\frac{7 + 14^{\frac{1}{2}} x^{7} y^{\frac{7}{2}}}{3 y^{3} (x^{- \frac{1}{2}} x)}$

Step 8.2

Multiply $x^{- \frac{1}{2}}$ by $x$ .

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Step 8.2.1

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

$\frac{7 + 14^{\frac{1}{2}} x^{7} y^{\frac{7}{2}}}{3 y^{3} (x^{- \frac{1}{2}} x^{1})}$

Step 8.2.2

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

$\frac{7 + 14^{\frac{1}{2}} x^{7} y^{\frac{7}{2}}}{3 y^{3} x^{- \frac{1}{2} + 1}}$

Step 8.3

Write $1$ as a fraction with a common denominator.

$\frac{7 + 14^{\frac{1}{2}} x^{7} y^{\frac{7}{2}}}{3 y^{3} x^{- \frac{1}{2} + \frac{2}{2}}}$

Step 8.4

Combine the numerators over the common denominator.

$\frac{7 + 14^{\frac{1}{2}} x^{7} y^{\frac{7}{2}}}{3 y^{3} x^{\frac{- 1 + 2}{2}}}$

Step 8.5

Add $- 1$ and $2$ .

$\frac{7 + 14^{\frac{1}{2}} x^{7} y^{\frac{7}{2}}}{3 y^{3} x^{\frac{1}{2}}}$

Step 9

Reorder factors in $\frac{7 + 14^{\frac{1}{2}} x^{7} y^{\frac{7}{2}}}{3 y^{3} x^{\frac{1}{2}}}$ .

$\frac{7 + x^{7} \cdot 14^{\frac{1}{2}} y^{\frac{7}{2}}}{3 y^{3} x^{\frac{1}{2}}}$

Step 10

Split the fraction $\frac{7 + x^{7} \cdot 14^{\frac{1}{2}} y^{\frac{7}{2}}}{3 y^{3} x^{\frac{1}{2}}}$ into two fractions.

$\frac{7}{3 y^{3} x^{\frac{1}{2}}} + \frac{x^{7} \cdot 14^{\frac{1}{2}} y^{\frac{7}{2}}}{3 y^{3} x^{\frac{1}{2}}}$

Step 11

Move $x^{\frac{1}{2}}$ to the numerator using the negative exponent rule $\frac{1}{b^{n}} = b^{- n}$ .

$\frac{7}{3 y^{3} x^{\frac{1}{2}}} + \frac{x^{7} \cdot 14^{\frac{1}{2}} y^{\frac{7}{2}} x^{- \frac{1}{2}}}{3 y^{3}}$

Step 12

Move $y^{3}$ to the numerator using the negative exponent rule $\frac{1}{b^{n}} = b^{- n}$ .

$\frac{7}{3 y^{3} x^{\frac{1}{2}}} + \frac{x^{7} \cdot 14^{\frac{1}{2}} y^{\frac{7}{2}} x^{- \frac{1}{2}} y^{- 3}}{3}$

Step 13

Simplify the numerator.

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Step 13.1

Multiply $x^{7}$ by $x^{- \frac{1}{2}}$ by adding the exponents.

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Step 13.1.1

Move $x^{- \frac{1}{2}}$ .

$\frac{7}{3 y^{3} x^{\frac{1}{2}}} + \frac{x^{- \frac{1}{2}} x^{7} \cdot 14^{\frac{1}{2}} y^{\frac{7}{2}} y^{- 3}}{3}$

Step 13.1.2

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

$\frac{7}{3 y^{3} x^{\frac{1}{2}}} + \frac{x^{- \frac{1}{2} + 7} \cdot 14^{\frac{1}{2}} y^{\frac{7}{2}} y^{- 3}}{3}$

Step 13.1.3

To write $7$ as a fraction with a common denominator, multiply by $\frac{2}{2}$ .

$\frac{7}{3 y^{3} x^{\frac{1}{2}}} + \frac{x^{- \frac{1}{2} + 7 \cdot \frac{2}{2}} \cdot 14^{\frac{1}{2}} y^{\frac{7}{2}} y^{- 3}}{3}$

Step 13.1.4

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

$\frac{7}{3 y^{3} x^{\frac{1}{2}}} + \frac{x^{- \frac{1}{2} + \frac{7 \cdot 2}{2}} \cdot 14^{\frac{1}{2}} y^{\frac{7}{2}} y^{- 3}}{3}$

Step 13.1.5

Combine the numerators over the common denominator.

$\frac{7}{3 y^{3} x^{\frac{1}{2}}} + \frac{x^{\frac{- 1 + 7 \cdot 2}{2}} \cdot 14^{\frac{1}{2}} y^{\frac{7}{2}} y^{- 3}}{3}$

Step 13.1.6

Simplify the numerator.

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Step 13.1.6.1

Multiply $7$ by $2$ .

$\frac{7}{3 y^{3} x^{\frac{1}{2}}} + \frac{x^{\frac{- 1 + 14}{2}} \cdot 14^{\frac{1}{2}} y^{\frac{7}{2}} y^{- 3}}{3}$

Step 13.1.6.2

Add $- 1$ and $14$ .

$\frac{7}{3 y^{3} x^{\frac{1}{2}}} + \frac{x^{\frac{13}{2}} \cdot 14^{\frac{1}{2}} y^{\frac{7}{2}} y^{- 3}}{3}$

Step 13.2

Multiply $y^{\frac{7}{2}}$ by $y^{- 3}$ by adding the exponents.

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Step 13.2.1

Move $y^{- 3}$ .

$\frac{7}{3 y^{3} x^{\frac{1}{2}}} + \frac{x^{\frac{13}{2}} \cdot 14^{\frac{1}{2}} (y^{- 3} y^{\frac{7}{2}})}{3}$

Step 13.2.2

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

$\frac{7}{3 y^{3} x^{\frac{1}{2}}} + \frac{x^{\frac{13}{2}} \cdot 14^{\frac{1}{2}} y^{- 3 + \frac{7}{2}}}{3}$

Step 13.2.3

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

$\frac{7}{3 y^{3} x^{\frac{1}{2}}} + \frac{x^{\frac{13}{2}} \cdot 14^{\frac{1}{2}} y^{- 3 \cdot \frac{2}{2} + \frac{7}{2}}}{3}$

Step 13.2.4

Combine $- 3$ and $\frac{2}{2}$ .

$\frac{7}{3 y^{3} x^{\frac{1}{2}}} + \frac{x^{\frac{13}{2}} \cdot 14^{\frac{1}{2}} y^{\frac{- 3 \cdot 2}{2} + \frac{7}{2}}}{3}$

Step 13.2.5

Combine the numerators over the common denominator.

$\frac{7}{3 y^{3} x^{\frac{1}{2}}} + \frac{x^{\frac{13}{2}} \cdot 14^{\frac{1}{2}} y^{\frac{- 3 \cdot 2 + 7}{2}}}{3}$

Step 13.2.6

Simplify the numerator.

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Step 13.2.6.1

Multiply $- 3$ by $2$ .

$\frac{7}{3 y^{3} x^{\frac{1}{2}}} + \frac{x^{\frac{13}{2}} \cdot 14^{\frac{1}{2}} y^{\frac{- 6 + 7}{2}}}{3}$

Step 13.2.6.2

Add $- 6$ and $7$ .

$\frac{7}{3 y^{3} x^{\frac{1}{2}}} + \frac{x^{\frac{13}{2}} \cdot 14^{\frac{1}{2}} y^{\frac{1}{2}}}{3}$