Question

Evaluate :(17²-8²)½​

Answer 1

Answer:

$( {17}^{2} - {8}^{2} ) {}^{ \frac{1}{2} } \\ \\ = {17}^{2 \times \frac{1}{2} } - {8}^{2 \times \frac{1}{2} } \\ \\ = {17}^{1} - {8}^{1} \\ \\ = 17 - 8 \\ \\ = 9$

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Answer 2

Answer:

Step-by-step explanation:

(17²-8²)½

This can written as;

$\sqrt{17^2-8^2}$

Taking square root we get

17 - 8                                   {$\sqrt{17^2}$ = 17  And $\sqrt{8^2}$ = 8(Because square and            

                                                      square root gets cancelled)}

9

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