$\"\"$

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The equation is $\"\"$ .

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For any real number b and for any positive integer n, $\"\"$ .

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$\"\"$

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Add $\"\"$ to each side.

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$\"\"$

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$\"\"$ $\"\"$

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Squaring on each side and eliminate square roots.

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$\"\"$

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$\"\"$ (Evaluate power: $\"\"$ ) \ \

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$\"\"$ (Add y to each side) \ \

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$\"\"$

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$\"\"$ (Subtract 16 from each side) \ \

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$\"\"$

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$\"\"$

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CHECK:-

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To check the solution, substitute $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$ (Subtract: $\"\"$ )

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$\"\"$ (Power of $\"\"$ )

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$\"\"$ (Apply Power of a power property: $\"\"$ )

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$\"\"$ (Cancel common terms)

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0 = 0

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The solution is true. $\"\"$

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The solution y is $\"\"$ .