Finite Math Examples

$\sqrt{{(y - 2)}^{16}}$

Step 1

Rewrite ${(y - 2)}^{16}$ as ${({(y - 2)}^{8})}^{2}$ .

$\sqrt{{({(y - 2)}^{8})}^{2}}$

Step 2

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

${(y - 2)}^{8}$

Step 3

Use the Binomial Theorem.

$y^{8} + 8 y^{7} \cdot - 2 + 28 y^{6} {(- 2)}^{2} + 56 y^{5} {(- 2)}^{3} + 70 y^{4} {(- 2)}^{4} + 56 y^{3} {(- 2)}^{5} + 28 y^{2} {(- 2)}^{6} + 8 y {(- 2)}^{7} + {(- 2)}^{8}$

Step 4

Simplify each term.

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Step 4.1

Multiply $- 2$ by $8$ .

$y^{8} - 16 y^{7} + 28 y^{6} {(- 2)}^{2} + 56 y^{5} {(- 2)}^{3} + 70 y^{4} {(- 2)}^{4} + 56 y^{3} {(- 2)}^{5} + 28 y^{2} {(- 2)}^{6} + 8 y {(- 2)}^{7} + {(- 2)}^{8}$

Step 4.2

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

$y^{8} - 16 y^{7} + 28 y^{6} \cdot 4 + 56 y^{5} {(- 2)}^{3} + 70 y^{4} {(- 2)}^{4} + 56 y^{3} {(- 2)}^{5} + 28 y^{2} {(- 2)}^{6} + 8 y {(- 2)}^{7} + {(- 2)}^{8}$

Step 4.3

Multiply $4$ by $28$ .

$y^{8} - 16 y^{7} + 112 y^{6} + 56 y^{5} {(- 2)}^{3} + 70 y^{4} {(- 2)}^{4} + 56 y^{3} {(- 2)}^{5} + 28 y^{2} {(- 2)}^{6} + 8 y {(- 2)}^{7} + {(- 2)}^{8}$

Step 4.4

Raise $- 2$ to the power of $3$ .

$y^{8} - 16 y^{7} + 112 y^{6} + 56 y^{5} \cdot - 8 + 70 y^{4} {(- 2)}^{4} + 56 y^{3} {(- 2)}^{5} + 28 y^{2} {(- 2)}^{6} + 8 y {(- 2)}^{7} + {(- 2)}^{8}$

Step 4.5

Multiply $- 8$ by $56$ .

$y^{8} - 16 y^{7} + 112 y^{6} - 448 y^{5} + 70 y^{4} {(- 2)}^{4} + 56 y^{3} {(- 2)}^{5} + 28 y^{2} {(- 2)}^{6} + 8 y {(- 2)}^{7} + {(- 2)}^{8}$

Step 4.6

Raise $- 2$ to the power of $4$ .

$y^{8} - 16 y^{7} + 112 y^{6} - 448 y^{5} + 70 y^{4} \cdot 16 + 56 y^{3} {(- 2)}^{5} + 28 y^{2} {(- 2)}^{6} + 8 y {(- 2)}^{7} + {(- 2)}^{8}$

Step 4.7

Multiply $16$ by $70$ .

$y^{8} - 16 y^{7} + 112 y^{6} - 448 y^{5} + 1120 y^{4} + 56 y^{3} {(- 2)}^{5} + 28 y^{2} {(- 2)}^{6} + 8 y {(- 2)}^{7} + {(- 2)}^{8}$

Step 4.8

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

$y^{8} - 16 y^{7} + 112 y^{6} - 448 y^{5} + 1120 y^{4} + 56 y^{3} \cdot - 32 + 28 y^{2} {(- 2)}^{6} + 8 y {(- 2)}^{7} + {(- 2)}^{8}$

Step 4.9

Multiply $- 32$ by $56$ .

$y^{8} - 16 y^{7} + 112 y^{6} - 448 y^{5} + 1120 y^{4} - 1792 y^{3} + 28 y^{2} {(- 2)}^{6} + 8 y {(- 2)}^{7} + {(- 2)}^{8}$

Step 4.10

Raise $- 2$ to the power of $6$ .

$y^{8} - 16 y^{7} + 112 y^{6} - 448 y^{5} + 1120 y^{4} - 1792 y^{3} + 28 y^{2} \cdot 64 + 8 y {(- 2)}^{7} + {(- 2)}^{8}$

Step 4.11

Multiply $64$ by $28$ .

$y^{8} - 16 y^{7} + 112 y^{6} - 448 y^{5} + 1120 y^{4} - 1792 y^{3} + 1792 y^{2} + 8 y {(- 2)}^{7} + {(- 2)}^{8}$

Step 4.12

Raise $- 2$ to the power of $7$ .

$y^{8} - 16 y^{7} + 112 y^{6} - 448 y^{5} + 1120 y^{4} - 1792 y^{3} + 1792 y^{2} + 8 y \cdot - 128 + {(- 2)}^{8}$

Step 4.13

Multiply $- 128$ by $8$ .

$y^{8} - 16 y^{7} + 112 y^{6} - 448 y^{5} + 1120 y^{4} - 1792 y^{3} + 1792 y^{2} - 1024 y + {(- 2)}^{8}$

Step 4.14

Raise $- 2$ to the power of $8$ .

$y^{8} - 16 y^{7} + 112 y^{6} - 448 y^{5} + 1120 y^{4} - 1792 y^{3} + 1792 y^{2} - 1024 y + 256$