Algebra Examples

$\sqrt[3]{{(y^{3} + 5)}^{18}}$

Step 1

Rewrite ${(y^{3} + 5)}^{18}$ as ${({(y^{3} + 5)}^{6})}^{3}$ .

$\sqrt[3]{{({(y^{3} + 5)}^{6})}^{3}}$

Step 2

Pull terms out from under the radical, assuming real numbers.

${(y^{3} + 5)}^{6}$

Step 3

Use the Binomial Theorem.

${(y^{3})}^{6} + 6 {(y^{3})}^{5} \cdot 5 + 15 {(y^{3})}^{4} \cdot 5^{2} + 20 {(y^{3})}^{3} \cdot 5^{3} + 15 {(y^{3})}^{2} \cdot 5^{4} + 6 y^{3} \cdot 5^{5} + 5^{6}$

Step 4

Simplify each term.

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Step 4.1

Multiply the exponents in ${(y^{3})}^{6}$ .

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Step 4.1.1

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

$y^{3 \cdot 6} + 6 {(y^{3})}^{5} \cdot 5 + 15 {(y^{3})}^{4} \cdot 5^{2} + 20 {(y^{3})}^{3} \cdot 5^{3} + 15 {(y^{3})}^{2} \cdot 5^{4} + 6 y^{3} \cdot 5^{5} + 5^{6}$

Step 4.1.2

Multiply $3$ by $6$ .

$y^{18} + 6 {(y^{3})}^{5} \cdot 5 + 15 {(y^{3})}^{4} \cdot 5^{2} + 20 {(y^{3})}^{3} \cdot 5^{3} + 15 {(y^{3})}^{2} \cdot 5^{4} + 6 y^{3} \cdot 5^{5} + 5^{6}$

Step 4.2

Multiply the exponents in ${(y^{3})}^{5}$ .

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Step 4.2.1

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

$y^{18} + 6 y^{3 \cdot 5} \cdot 5 + 15 {(y^{3})}^{4} \cdot 5^{2} + 20 {(y^{3})}^{3} \cdot 5^{3} + 15 {(y^{3})}^{2} \cdot 5^{4} + 6 y^{3} \cdot 5^{5} + 5^{6}$

Step 4.2.2

Multiply $3$ by $5$ .

$y^{18} + 6 y^{15} \cdot 5 + 15 {(y^{3})}^{4} \cdot 5^{2} + 20 {(y^{3})}^{3} \cdot 5^{3} + 15 {(y^{3})}^{2} \cdot 5^{4} + 6 y^{3} \cdot 5^{5} + 5^{6}$

Step 4.3

Multiply $5$ by $6$ .

$y^{18} + 30 y^{15} + 15 {(y^{3})}^{4} \cdot 5^{2} + 20 {(y^{3})}^{3} \cdot 5^{3} + 15 {(y^{3})}^{2} \cdot 5^{4} + 6 y^{3} \cdot 5^{5} + 5^{6}$

Step 4.4

Multiply the exponents in ${(y^{3})}^{4}$ .

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Step 4.4.1

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

$y^{18} + 30 y^{15} + 15 y^{3 \cdot 4} \cdot 5^{2} + 20 {(y^{3})}^{3} \cdot 5^{3} + 15 {(y^{3})}^{2} \cdot 5^{4} + 6 y^{3} \cdot 5^{5} + 5^{6}$

Step 4.4.2

Multiply $3$ by $4$ .

$y^{18} + 30 y^{15} + 15 y^{12} \cdot 5^{2} + 20 {(y^{3})}^{3} \cdot 5^{3} + 15 {(y^{3})}^{2} \cdot 5^{4} + 6 y^{3} \cdot 5^{5} + 5^{6}$

Step 4.5

Raise $5$ to the power of $2$ .

$y^{18} + 30 y^{15} + 15 y^{12} \cdot 25 + 20 {(y^{3})}^{3} \cdot 5^{3} + 15 {(y^{3})}^{2} \cdot 5^{4} + 6 y^{3} \cdot 5^{5} + 5^{6}$

Step 4.6

Multiply $25$ by $15$ .

$y^{18} + 30 y^{15} + 375 y^{12} + 20 {(y^{3})}^{3} \cdot 5^{3} + 15 {(y^{3})}^{2} \cdot 5^{4} + 6 y^{3} \cdot 5^{5} + 5^{6}$

Step 4.7

Multiply the exponents in ${(y^{3})}^{3}$ .

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Step 4.7.1

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

$y^{18} + 30 y^{15} + 375 y^{12} + 20 y^{3 \cdot 3} \cdot 5^{3} + 15 {(y^{3})}^{2} \cdot 5^{4} + 6 y^{3} \cdot 5^{5} + 5^{6}$

Step 4.7.2

Multiply $3$ by $3$ .

$y^{18} + 30 y^{15} + 375 y^{12} + 20 y^{9} \cdot 5^{3} + 15 {(y^{3})}^{2} \cdot 5^{4} + 6 y^{3} \cdot 5^{5} + 5^{6}$

Step 4.8

Raise $5$ to the power of $3$ .

$y^{18} + 30 y^{15} + 375 y^{12} + 20 y^{9} \cdot 125 + 15 {(y^{3})}^{2} \cdot 5^{4} + 6 y^{3} \cdot 5^{5} + 5^{6}$

Step 4.9

Multiply $125$ by $20$ .

$y^{18} + 30 y^{15} + 375 y^{12} + 2500 y^{9} + 15 {(y^{3})}^{2} \cdot 5^{4} + 6 y^{3} \cdot 5^{5} + 5^{6}$

Step 4.10

Multiply the exponents in ${(y^{3})}^{2}$ .

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Step 4.10.1

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

$y^{18} + 30 y^{15} + 375 y^{12} + 2500 y^{9} + 15 y^{3 \cdot 2} \cdot 5^{4} + 6 y^{3} \cdot 5^{5} + 5^{6}$

Step 4.10.2

Multiply $3$ by $2$ .

$y^{18} + 30 y^{15} + 375 y^{12} + 2500 y^{9} + 15 y^{6} \cdot 5^{4} + 6 y^{3} \cdot 5^{5} + 5^{6}$

Step 4.11

Raise $5$ to the power of $4$ .

$y^{18} + 30 y^{15} + 375 y^{12} + 2500 y^{9} + 15 y^{6} \cdot 625 + 6 y^{3} \cdot 5^{5} + 5^{6}$

Step 4.12

Multiply $625$ by $15$ .

$y^{18} + 30 y^{15} + 375 y^{12} + 2500 y^{9} + 9375 y^{6} + 6 y^{3} \cdot 5^{5} + 5^{6}$

Step 4.13

Raise $5$ to the power of $5$ .

$y^{18} + 30 y^{15} + 375 y^{12} + 2500 y^{9} + 9375 y^{6} + 6 y^{3} \cdot 3125 + 5^{6}$

Step 4.14

Multiply $3125$ by $6$ .

$y^{18} + 30 y^{15} + 375 y^{12} + 2500 y^{9} + 9375 y^{6} + 18750 y^{3} + 5^{6}$

Step 4.15

Raise $5$ to the power of $6$ .

$y^{18} + 30 y^{15} + 375 y^{12} + 2500 y^{9} + 9375 y^{6} + 18750 y^{3} + 15625$