Question

vii . 7th ....please tell me the answer fast ..with proper solution ..?fast

Answer 1

Hey !!!

Here is ur solution :-in this given attachment

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Hope it helps you !!!

@Rajukumar111

Answer 2

Heya sisy ✋

$( \frac{5 ^{ - 1} \times 7 ^{2} }{5 ^{2} \times 7 ^{ - 4} } ) ^{ \frac{7}{2} } \times ( \frac{5 ^{ - 2} \times 7 ^{3} }{5 ^{3} \times 7 ^{ - 5} } ) ^{ \frac{ - 5}{2} }$
$\\ = (5 ^{ - 1 - 2} \times 7 ^{2 - ( - 4)} ) ^{ \frac{7}{2} } \times \\ \\ (5 ^{ - 2 - 3} \times 7 ^{3 - ( - 5)} ) ^{ \frac{ - 5}{2} } \\ \\ = (5 ^{ - 3} \times 7 ^{6} ) \frac{7}{2} \times (5 ^{ - 5} \times 7 ^{8} ) ^{ \frac{ - 5}{2} }$


$= (5 ^{ - 3} \times 7 ^{6} ) ^{ \frac{7}{2} } \times (5 ^{ - 5} \times 7 ^{8} ) ^{ \frac{ - 5}{2} } \\ \\ = (5 ^{ - 3 \times \frac{7}{2} } \times 7 ^{6 \times \frac{7}{2} } ) \times \\ (5 ^{ - 5 \times \frac{ - 5}{2} } \times 7 ^{8 \times \frac{ - 5}{2} } ) \\ \\ = (5 ^{ \frac{ - 21}{2} } \times 7 ^{21} ) \times (5 ^{ \frac{25}{2} } \times 7 ^{ \frac{ - 40}{2} } )$


$= 5 ^{ \frac{ - 21}{2} + \frac{25}{2} } \times 7 ^{21 - 20} \\ \\ = 5 ^{ \frac{ 4}{2} } \times 7 \\ \\ = 5 ^{2} \times 7 \\ \\ = 25 \times 7 \\ \\ = 175$




Thanks :))))