Basic Math Examples

$(\sqrt{8 a^{3}} + \sqrt{5 b^{7}}) \div (\sqrt{13 a^{3}} - \sqrt{17 b^{7}})$

Step 1

Rewrite the division as a fraction.

$\frac{\sqrt{8 a^{3}} + \sqrt{5 b^{7}}}{\sqrt{13 a^{3}} - \sqrt{17 b^{7}}}$

Step 2

Simplify the numerator.

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Step 2.1

Rewrite $8 a^{3}$ as ${(2 a)}^{2} \cdot (2 a)$ .

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Step 2.1.1

Factor $4$ out of $8$ .

$\frac{\sqrt{4 (2) a^{3}} + \sqrt{5 b^{7}}}{\sqrt{13 a^{3}} - \sqrt{17 b^{7}}}$

Step 2.1.2

Rewrite $4$ as $2^{2}$ .

$\frac{\sqrt{2^{2} \cdot 2 a^{3}} + \sqrt{5 b^{7}}}{\sqrt{13 a^{3}} - \sqrt{17 b^{7}}}$

Step 2.1.3

Factor out $a^{2}$ .

$\frac{\sqrt{2^{2} \cdot 2 (a^{2} a)} + \sqrt{5 b^{7}}}{\sqrt{13 a^{3}} - \sqrt{17 b^{7}}}$

Step 2.1.4

Move $2$ .

$\frac{\sqrt{2^{2} a^{2} \cdot 2 a} + \sqrt{5 b^{7}}}{\sqrt{13 a^{3}} - \sqrt{17 b^{7}}}$

Step 2.1.5

Rewrite $2^{2} a^{2}$ as ${(2 a)}^{2}$ .

$\frac{\sqrt{{(2 a)}^{2} \cdot 2 a} + \sqrt{5 b^{7}}}{\sqrt{13 a^{3}} - \sqrt{17 b^{7}}}$

Step 2.1.6

Add parentheses.

$\frac{\sqrt{{(2 a)}^{2} \cdot (2 a)} + \sqrt{5 b^{7}}}{\sqrt{13 a^{3}} - \sqrt{17 b^{7}}}$

Step 2.2

Pull terms out from under the radical.

$\frac{2 a \sqrt{2 a} + \sqrt{5 b^{7}}}{\sqrt{13 a^{3}} - \sqrt{17 b^{7}}}$

Step 2.3

Rewrite $5 b^{7}$ as ${(b^{3})}^{2} \cdot (5 b)$ .

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Step 2.3.1

Factor out $b^{6}$ .

$\frac{2 a \sqrt{2 a} + \sqrt{5 (b^{6} b)}}{\sqrt{13 a^{3}} - \sqrt{17 b^{7}}}$

Step 2.3.2

Rewrite $b^{6}$ as ${(b^{3})}^{2}$ .

$\frac{2 a \sqrt{2 a} + \sqrt{5 ({(b^{3})}^{2} b)}}{\sqrt{13 a^{3}} - \sqrt{17 b^{7}}}$

Step 2.3.3

Reorder $5$ and ${(b^{3})}^{2}$ .

$\frac{2 a \sqrt{2 a} + \sqrt{{(b^{3})}^{2} \cdot 5 b}}{\sqrt{13 a^{3}} - \sqrt{17 b^{7}}}$

Step 2.3.4

Add parentheses.

$\frac{2 a \sqrt{2 a} + \sqrt{{(b^{3})}^{2} \cdot (5 b)}}{\sqrt{13 a^{3}} - \sqrt{17 b^{7}}}$

Step 2.4

Pull terms out from under the radical.

$\frac{2 a \sqrt{2 a} + b^{3} \sqrt{5 b}}{\sqrt{13 a^{3}} - \sqrt{17 b^{7}}}$

Step 3

Simplify the denominator.

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Step 3.1

Rewrite $13 a^{3}$ as $a^{2} \cdot (13 a)$ .

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Step 3.1.1

Factor out $a^{2}$ .

$\frac{2 a \sqrt{2 a} + b^{3} \sqrt{5 b}}{\sqrt{13 (a^{2} a)} - \sqrt{17 b^{7}}}$

Step 3.1.2

Reorder $13$ and $a^{2}$ .

$\frac{2 a \sqrt{2 a} + b^{3} \sqrt{5 b}}{\sqrt{a^{2} \cdot 13 a} - \sqrt{17 b^{7}}}$

Step 3.1.3

Add parentheses.

$\frac{2 a \sqrt{2 a} + b^{3} \sqrt{5 b}}{\sqrt{a^{2} \cdot (13 a)} - \sqrt{17 b^{7}}}$

Step 3.2

Pull terms out from under the radical.

$\frac{2 a \sqrt{2 a} + b^{3} \sqrt{5 b}}{a \sqrt{13 a} - \sqrt{17 b^{7}}}$

Step 3.3

Rewrite $17 b^{7}$ as ${(b^{3})}^{2} \cdot (17 b)$ .

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Step 3.3.1

Factor out $b^{6}$ .

$\frac{2 a \sqrt{2 a} + b^{3} \sqrt{5 b}}{a \sqrt{13 a} - \sqrt{17 (b^{6} b)}}$

Step 3.3.2

Rewrite $b^{6}$ as ${(b^{3})}^{2}$ .

$\frac{2 a \sqrt{2 a} + b^{3} \sqrt{5 b}}{a \sqrt{13 a} - \sqrt{17 ({(b^{3})}^{2} b)}}$

Step 3.3.3

Reorder $17$ and ${(b^{3})}^{2}$ .

$\frac{2 a \sqrt{2 a} + b^{3} \sqrt{5 b}}{a \sqrt{13 a} - \sqrt{{(b^{3})}^{2} \cdot 17 b}}$

Step 3.3.4

Add parentheses.

$\frac{2 a \sqrt{2 a} + b^{3} \sqrt{5 b}}{a \sqrt{13 a} - \sqrt{{(b^{3})}^{2} \cdot (17 b)}}$

Step 3.4

Pull terms out from under the radical.

$\frac{2 a \sqrt{2 a} + b^{3} \sqrt{5 b}}{a \sqrt{13 a} - b^{3} \sqrt{17 b}}$

Step 4

Multiply $\frac{2 a \sqrt{2 a} + b^{3} \sqrt{5 b}}{a \sqrt{13 a} - b^{3} \sqrt{17 b}}$ by $\frac{a \sqrt{13 a} + b^{3} \sqrt{17 b}}{a \sqrt{13 a} + b^{3} \sqrt{17 b}}$ .

$\frac{2 a \sqrt{2 a} + b^{3} \sqrt{5 b}}{a \sqrt{13 a} - b^{3} \sqrt{17 b}} \cdot \frac{a \sqrt{13 a} + b^{3} \sqrt{17 b}}{a \sqrt{13 a} + b^{3} \sqrt{17 b}}$

Step 5

Combine fractions.

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Step 5.1

Multiply $\frac{2 a \sqrt{2 a} + b^{3} \sqrt{5 b}}{a \sqrt{13 a} - b^{3} \sqrt{17 b}}$ by $\frac{a \sqrt{13 a} + b^{3} \sqrt{17 b}}{a \sqrt{13 a} + b^{3} \sqrt{17 b}}$ .

$\frac{(2 a \sqrt{2 a} + b^{3} \sqrt{5 b}) (a \sqrt{13 a} + b^{3} \sqrt{17 b})}{(a \sqrt{13 a} - b^{3} \sqrt{17 b}) (a \sqrt{13 a} + b^{3} \sqrt{17 b})}$

Step 5.2

Expand the denominator using the FOIL method.

$\frac{(2 a \sqrt{2 a} + b^{3} \sqrt{5 b}) (a \sqrt{13 a} + b^{3} \sqrt{17 b})}{a^{2} {\sqrt{13 a}}^{2} + a (b^{3} \sqrt{221 a b}) - b^{3} (a \sqrt{221 b a}) - b^{6} {\sqrt{17 b}}^{2}}$

Step 5.3

Simplify.

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Step 5.3.1

Subtract $a b^{3} \sqrt{221 a b}$ from $a b^{3} \sqrt{221 a b}$ .

$\frac{(2 a \sqrt{2 a} + b^{3} \sqrt{5 b}) (a \sqrt{13 a} + b^{3} \sqrt{17 b})}{13 a^{3} + 0 - 17 b^{7}}$

Step 5.3.2

Add $13 a^{3}$ and $0$ .

$\frac{(2 a \sqrt{2 a} + b^{3} \sqrt{5 b}) (a \sqrt{13 a} + b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 6

Expand $(2 a \sqrt{2 a} + b^{3} \sqrt{5 b}) (a \sqrt{13 a} + b^{3} \sqrt{17 b})$ using the FOIL Method.

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Step 6.1

Apply the distributive property.

$\frac{2 a \sqrt{2 a} (a \sqrt{13 a} + b^{3} \sqrt{17 b}) + b^{3} \sqrt{5 b} (a \sqrt{13 a} + b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 6.2

Apply the distributive property.

$\frac{2 a \sqrt{2 a} (a \sqrt{13 a}) + 2 a \sqrt{2 a} (b^{3} \sqrt{17 b}) + b^{3} \sqrt{5 b} (a \sqrt{13 a} + b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 6.3

Apply the distributive property.

$\frac{2 a \sqrt{2 a} (a \sqrt{13 a}) + 2 a \sqrt{2 a} (b^{3} \sqrt{17 b}) + b^{3} \sqrt{5 b} (a \sqrt{13 a}) + b^{3} \sqrt{5 b} (b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 7

Simplify terms.

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Step 7.1

Simplify each term.

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Step 7.1.1

Multiply $a$ by $a$ by adding the exponents.

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Step 7.1.1.1

Move $a$ .

$\frac{2 (a \cdot a) \sqrt{2 a} \sqrt{13 a} + 2 a \sqrt{2 a} (b^{3} \sqrt{17 b}) + b^{3} \sqrt{5 b} (a \sqrt{13 a}) + b^{3} \sqrt{5 b} (b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 7.1.1.2

Multiply $a$ by $a$ .

$\frac{2 a^{2} \sqrt{2 a} \sqrt{13 a} + 2 a \sqrt{2 a} (b^{3} \sqrt{17 b}) + b^{3} \sqrt{5 b} (a \sqrt{13 a}) + b^{3} \sqrt{5 b} (b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 7.1.2

Multiply $2 a^{2} \sqrt{2 a} \sqrt{13 a}$ .

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Step 7.1.2.1

Combine using the product rule for radicals.

$\frac{2 a^{2} \sqrt{13 a (2 a)} + 2 a \sqrt{2 a} (b^{3} \sqrt{17 b}) + b^{3} \sqrt{5 b} (a \sqrt{13 a}) + b^{3} \sqrt{5 b} (b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 7.1.2.2

Multiply $2$ by $13$ .

$\frac{2 a^{2} \sqrt{26 a \cdot a} + 2 a \sqrt{2 a} (b^{3} \sqrt{17 b}) + b^{3} \sqrt{5 b} (a \sqrt{13 a}) + b^{3} \sqrt{5 b} (b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 7.1.2.3

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

$\frac{2 a^{2} \sqrt{26 (a^{1} a)} + 2 a \sqrt{2 a} (b^{3} \sqrt{17 b}) + b^{3} \sqrt{5 b} (a \sqrt{13 a}) + b^{3} \sqrt{5 b} (b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 7.1.2.4

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

$\frac{2 a^{2} \sqrt{26 (a^{1} a^{1})} + 2 a \sqrt{2 a} (b^{3} \sqrt{17 b}) + b^{3} \sqrt{5 b} (a \sqrt{13 a}) + b^{3} \sqrt{5 b} (b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 7.1.2.5

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

$\frac{2 a^{2} \sqrt{26 a^{1 + 1}} + 2 a \sqrt{2 a} (b^{3} \sqrt{17 b}) + b^{3} \sqrt{5 b} (a \sqrt{13 a}) + b^{3} \sqrt{5 b} (b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 7.1.2.6

Add $1$ and $1$ .

$\frac{2 a^{2} \sqrt{26 a^{2}} + 2 a \sqrt{2 a} (b^{3} \sqrt{17 b}) + b^{3} \sqrt{5 b} (a \sqrt{13 a}) + b^{3} \sqrt{5 b} (b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 7.1.3

Reorder $26$ and $a^{2}$ .

$\frac{2 a^{2} \sqrt{a^{2} \cdot 26} + 2 a \sqrt{2 a} (b^{3} \sqrt{17 b}) + b^{3} \sqrt{5 b} (a \sqrt{13 a}) + b^{3} \sqrt{5 b} (b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 7.1.4

Pull terms out from under the radical.

$\frac{2 a^{2} (a \sqrt{26}) + 2 a \sqrt{2 a} (b^{3} \sqrt{17 b}) + b^{3} \sqrt{5 b} (a \sqrt{13 a}) + b^{3} \sqrt{5 b} (b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 7.1.5

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

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Step 7.1.5.1

Move $a$ .

$\frac{2 (a \cdot a^{2}) \sqrt{26} + 2 a \sqrt{2 a} (b^{3} \sqrt{17 b}) + b^{3} \sqrt{5 b} (a \sqrt{13 a}) + b^{3} \sqrt{5 b} (b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 7.1.5.2

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

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Step 7.1.5.2.1

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

$\frac{2 (a^{1} a^{2}) \sqrt{26} + 2 a \sqrt{2 a} (b^{3} \sqrt{17 b}) + b^{3} \sqrt{5 b} (a \sqrt{13 a}) + b^{3} \sqrt{5 b} (b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 7.1.5.2.2

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

$\frac{2 a^{1 + 2} \sqrt{26} + 2 a \sqrt{2 a} (b^{3} \sqrt{17 b}) + b^{3} \sqrt{5 b} (a \sqrt{13 a}) + b^{3} \sqrt{5 b} (b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 7.1.5.3

Add $1$ and $2$ .

$\frac{2 a^{3} \sqrt{26} + 2 a \sqrt{2 a} (b^{3} \sqrt{17 b}) + b^{3} \sqrt{5 b} (a \sqrt{13 a}) + b^{3} \sqrt{5 b} (b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 7.1.6

Multiply $2 a \sqrt{2 a} (b^{3} \sqrt{17 b})$ .

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Step 7.1.6.1

Combine using the product rule for radicals.

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{2 a (17 b)}) + b^{3} \sqrt{5 b} (a \sqrt{13 a}) + b^{3} \sqrt{5 b} (b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 7.1.6.2

Multiply $17$ by $2$ .

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} \sqrt{5 b} (a \sqrt{13 a}) + b^{3} \sqrt{5 b} (b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 7.1.7

Multiply $b^{3} \sqrt{5 b} (a \sqrt{13 a})$ .

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Step 7.1.7.1

Combine using the product rule for radicals.

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} (a \sqrt{5 b (13 a)}) + b^{3} \sqrt{5 b} (b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 7.1.7.2

Multiply $13$ by $5$ .

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} (a \sqrt{65 b a}) + b^{3} \sqrt{5 b} (b^{3} \sqrt{17 b})}{13 a^{3} - 17 b^{7}}$

Step 7.1.8

Multiply $b^{3}$ by $b^{3}$ by adding the exponents.

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Step 7.1.8.1

Move $b^{3}$ .

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} (a \sqrt{65 b a}) + b^{3} b^{3} \sqrt{5 b} \sqrt{17 b}}{13 a^{3} - 17 b^{7}}$

Step 7.1.8.2

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

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} (a \sqrt{65 b a}) + b^{3 + 3} \sqrt{5 b} \sqrt{17 b}}{13 a^{3} - 17 b^{7}}$

Step 7.1.8.3

Add $3$ and $3$ .

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} (a \sqrt{65 b a}) + b^{6} \sqrt{5 b} \sqrt{17 b}}{13 a^{3} - 17 b^{7}}$

Step 7.1.9

Multiply $b^{6} \sqrt{5 b} \sqrt{17 b}$ .

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Step 7.1.9.1

Combine using the product rule for radicals.

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} (a \sqrt{65 b a}) + b^{6} \sqrt{17 b (5 b)}}{13 a^{3} - 17 b^{7}}$

Step 7.1.9.2

Multiply $5$ by $17$ .

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} (a \sqrt{65 b a}) + b^{6} \sqrt{85 b \cdot b}}{13 a^{3} - 17 b^{7}}$

Step 7.1.9.3

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

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} (a \sqrt{65 b a}) + b^{6} \sqrt{85 (b^{1} b)}}{13 a^{3} - 17 b^{7}}$

Step 7.1.9.4

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

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} (a \sqrt{65 b a}) + b^{6} \sqrt{85 (b^{1} b^{1})}}{13 a^{3} - 17 b^{7}}$

Step 7.1.9.5

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

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} (a \sqrt{65 b a}) + b^{6} \sqrt{85 b^{1 + 1}}}{13 a^{3} - 17 b^{7}}$

Step 7.1.9.6

Add $1$ and $1$ .

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} (a \sqrt{65 b a}) + b^{6} \sqrt{85 b^{2}}}{13 a^{3} - 17 b^{7}}$

Step 7.1.10

Reorder $85$ and $b^{2}$ .

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} (a \sqrt{65 b a}) + b^{6} \sqrt{b^{2} \cdot 85}}{13 a^{3} - 17 b^{7}}$

Step 7.1.11

Pull terms out from under the radical.

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} (a \sqrt{65 b a}) + b^{6} (b \sqrt{85})}{13 a^{3} - 17 b^{7}}$

Step 7.1.12

Rewrite using the commutative property of multiplication.

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} (a \sqrt{65 b a}) + \sqrt{85} b^{6} b}{13 a^{3} - 17 b^{7}}$

Step 7.1.13

Multiply $b^{6}$ by $b$ by adding the exponents.

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Step 7.1.13.1

Move $b$ .

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} (a \sqrt{65 b a}) + \sqrt{85} (b \cdot b^{6})}{13 a^{3} - 17 b^{7}}$

Step 7.1.13.2

Multiply $b$ by $b^{6}$ .

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Step 7.1.13.2.1

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

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} (a \sqrt{65 b a}) + \sqrt{85} (b^{1} b^{6})}{13 a^{3} - 17 b^{7}}$

Step 7.1.13.2.2

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

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} (a \sqrt{65 b a}) + \sqrt{85} b^{1 + 6}}{13 a^{3} - 17 b^{7}}$

Step 7.1.13.3

Add $1$ and $6$ .

$\frac{2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} (a \sqrt{65 b a}) + \sqrt{85} b^{7}}{13 a^{3} - 17 b^{7}}$

Step 7.2

Reorder factors in $2 a^{3} \sqrt{26} + 2 a (b^{3} \sqrt{34 a b}) + b^{3} (a \sqrt{65 b a}) + \sqrt{85} b^{7}$ .

$\frac{2 a^{3} \sqrt{26} + 2 a b^{3} \sqrt{34 a b} + b^{3} a \sqrt{65 b a} + \sqrt{85} b^{7}}{13 a^{3} - 17 b^{7}}$