Pre-Algebra Examples

$\sqrt[3]{216 x^{16} y^{10}} + \sqrt[3]{x^{16} y^{10}} - \sqrt[3]{8 x^{17} y^{23}}$

Step 1

Simplify each term.

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Step 1.1

Rewrite $216 x^{16} y^{10}$ as ${(6 x^{5} y^{3})}^{3} (x y)$ .

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Step 1.1.1

Rewrite $216$ as $6^{3}$ .

$\sqrt[3]{6^{3} x^{16} y^{10}} + \sqrt[3]{x^{16} y^{10}} - \sqrt[3]{8 x^{17} y^{23}}$

Step 1.1.2

Factor out $x^{15}$ .

$\sqrt[3]{6^{3} (x^{15} x) y^{10}} + \sqrt[3]{x^{16} y^{10}} - \sqrt[3]{8 x^{17} y^{23}}$

Step 1.1.3

Rewrite $x^{15}$ as ${(x^{5})}^{3}$ .

$\sqrt[3]{6^{3} ({(x^{5})}^{3} x) y^{10}} + \sqrt[3]{x^{16} y^{10}} - \sqrt[3]{8 x^{17} y^{23}}$

Step 1.1.4

Factor out $y^{9}$ .

$\sqrt[3]{6^{3} ({(x^{5})}^{3} x) (y^{9} y)} + \sqrt[3]{x^{16} y^{10}} - \sqrt[3]{8 x^{17} y^{23}}$

Step 1.1.5

Rewrite $y^{9}$ as ${(y^{3})}^{3}$ .

$\sqrt[3]{6^{3} ({(x^{5})}^{3} x) ({(y^{3})}^{3} y)} + \sqrt[3]{x^{16} y^{10}} - \sqrt[3]{8 x^{17} y^{23}}$

Step 1.1.6

Move $x$ .

$\sqrt[3]{6^{3} ({(x^{5})}^{3}) {(y^{3})}^{3} x y} + \sqrt[3]{x^{16} y^{10}} - \sqrt[3]{8 x^{17} y^{23}}$

Step 1.1.7

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

$\sqrt[3]{{(6 x^{5} y^{3})}^{3} x y} + \sqrt[3]{x^{16} y^{10}} - \sqrt[3]{8 x^{17} y^{23}}$

Step 1.1.8

Add parentheses.

$\sqrt[3]{{(6 x^{5} y^{3})}^{3} (x y)} + \sqrt[3]{x^{16} y^{10}} - \sqrt[3]{8 x^{17} y^{23}}$

Step 1.2

Pull terms out from under the radical.

$6 x^{5} y^{3} \sqrt[3]{x y} + \sqrt[3]{x^{16} y^{10}} - \sqrt[3]{8 x^{17} y^{23}}$

Step 1.3

Rewrite $x^{16} y^{10}$ as ${(x^{5} y^{3})}^{3} (x y)$ .

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Step 1.3.1

Factor out $x^{15}$ .

$6 x^{5} y^{3} \sqrt[3]{x y} + \sqrt[3]{x^{15} x y^{10}} - \sqrt[3]{8 x^{17} y^{23}}$

Step 1.3.2

Rewrite $x^{15}$ as ${(x^{5})}^{3}$ .

$6 x^{5} y^{3} \sqrt[3]{x y} + \sqrt[3]{{(x^{5})}^{3} x y^{10}} - \sqrt[3]{8 x^{17} y^{23}}$

Step 1.3.3

Factor out $y^{9}$ .

$6 x^{5} y^{3} \sqrt[3]{x y} + \sqrt[3]{{(x^{5})}^{3} x (y^{9} y)} - \sqrt[3]{8 x^{17} y^{23}}$

Step 1.3.4

Rewrite $y^{9}$ as ${(y^{3})}^{3}$ .

$6 x^{5} y^{3} \sqrt[3]{x y} + \sqrt[3]{{(x^{5})}^{3} x ({(y^{3})}^{3} y)} - \sqrt[3]{8 x^{17} y^{23}}$

Step 1.3.5

Move $x$ .

$6 x^{5} y^{3} \sqrt[3]{x y} + \sqrt[3]{{(x^{5})}^{3} {(y^{3})}^{3} x y} - \sqrt[3]{8 x^{17} y^{23}}$

Step 1.3.6

Rewrite ${(x^{5})}^{3} {(y^{3})}^{3}$ as ${(x^{5} y^{3})}^{3}$ .

$6 x^{5} y^{3} \sqrt[3]{x y} + \sqrt[3]{{(x^{5} y^{3})}^{3} x y} - \sqrt[3]{8 x^{17} y^{23}}$

Step 1.3.7

Add parentheses.

$6 x^{5} y^{3} \sqrt[3]{x y} + \sqrt[3]{{(x^{5} y^{3})}^{3} (x y)} - \sqrt[3]{8 x^{17} y^{23}}$

Step 1.4

Pull terms out from under the radical.

$6 x^{5} y^{3} \sqrt[3]{x y} + x^{5} y^{3} \sqrt[3]{x y} - \sqrt[3]{8 x^{17} y^{23}}$

Step 1.5

Rewrite $8 x^{17} y^{23}$ as ${(2 x^{5} y^{7})}^{3} (x^{2} y^{2})$ .

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Step 1.5.1

Rewrite $8$ as $2^{3}$ .

$6 x^{5} y^{3} \sqrt[3]{x y} + x^{5} y^{3} \sqrt[3]{x y} - \sqrt[3]{2^{3} x^{17} y^{23}}$

Step 1.5.2

Factor out $x^{15}$ .

$6 x^{5} y^{3} \sqrt[3]{x y} + x^{5} y^{3} \sqrt[3]{x y} - \sqrt[3]{2^{3} (x^{15} x^{2}) y^{23}}$

Step 1.5.3

Rewrite $x^{15}$ as ${(x^{5})}^{3}$ .

$6 x^{5} y^{3} \sqrt[3]{x y} + x^{5} y^{3} \sqrt[3]{x y} - \sqrt[3]{2^{3} ({(x^{5})}^{3} x^{2}) y^{23}}$

Step 1.5.4

Factor out $y^{21}$ .

$6 x^{5} y^{3} \sqrt[3]{x y} + x^{5} y^{3} \sqrt[3]{x y} - \sqrt[3]{2^{3} ({(x^{5})}^{3} x^{2}) (y^{21} y^{2})}$

Step 1.5.5

Rewrite $y^{21}$ as ${(y^{7})}^{3}$ .

$6 x^{5} y^{3} \sqrt[3]{x y} + x^{5} y^{3} \sqrt[3]{x y} - \sqrt[3]{2^{3} ({(x^{5})}^{3} x^{2}) ({(y^{7})}^{3} y^{2})}$

Step 1.5.6

Move $x^{2}$ .

$6 x^{5} y^{3} \sqrt[3]{x y} + x^{5} y^{3} \sqrt[3]{x y} - \sqrt[3]{2^{3} ({(x^{5})}^{3}) {(y^{7})}^{3} x^{2} y^{2}}$

Step 1.5.7

Rewrite $2^{3} ({(x^{5})}^{3}) {(y^{7})}^{3}$ as ${(2 x^{5} y^{7})}^{3}$ .

$6 x^{5} y^{3} \sqrt[3]{x y} + x^{5} y^{3} \sqrt[3]{x y} - \sqrt[3]{{(2 x^{5} y^{7})}^{3} x^{2} y^{2}}$

Step 1.5.8

Add parentheses.

$6 x^{5} y^{3} \sqrt[3]{x y} + x^{5} y^{3} \sqrt[3]{x y} - \sqrt[3]{{(2 x^{5} y^{7})}^{3} (x^{2} y^{2})}$

Step 1.6

Pull terms out from under the radical.

$6 x^{5} y^{3} \sqrt[3]{x y} + x^{5} y^{3} \sqrt[3]{x y} - (2 x^{5} y^{7} \sqrt[3]{x^{2} y^{2}})$

Step 1.7

Multiply $2$ by $- 1$ .

$6 x^{5} y^{3} \sqrt[3]{x y} + x^{5} y^{3} \sqrt[3]{x y} - 2 x^{5} y^{7} \sqrt[3]{x^{2} y^{2}}$

Step 2

Add $6 x^{5} y^{3} \sqrt[3]{x y}$ and $x^{5} y^{3} \sqrt[3]{x y}$ .

$7 x^{5} y^{3} \sqrt[3]{x y} - 2 x^{5} y^{7} \sqrt[3]{x^{2} y^{2}}$