Question

please solve this sum :

Answer 1

Hey dear here is your answer!!!!!

___________________________

We have been given:-

$\frac{1}{3} ^{-2}$ + $\frac{1}{4} ^{-2}$ + $\frac{1}{5} ^{-2}$ - $\frac{1}{6} ^{-2}$

To convert the negative exponential into positive we take their reciprocal.

It becomes:-

=3² + 4² + 5² - 6²

= 9 + 16 + 25 - 36

= 14

So, the answer is 14 !

$\large\boxed{\large\boxed{\large\boxed{Solved !}}}}$

❣️⭐ Hope it helps you dear...⭐⭐❣️❣️

Answer 2

$\huge\bold\red{Solution :}$

$\mathsf{ = {3}^{2} + {4}^{2} + {5}^{2} - {6}^{2} }$

$\mathsf{= 9 + 16 + 25 - 36}$

$\mathsf{ = 25 - 11}$

$\mathsf{ = 14}$