Question

1/2^-2+ 1/3^-2+ 1/5^-2

Answer 1

Answer:

38

Step-by-step explanation:

(1 / (2^(-2))) + (1 / (3^(-2))) + (1 / (5^(-2))) =38

Answer 2

Answer:

$\tt 38$

Step-by-step explanation:

We have,

$\tt \dfrac{1}{2^{-2}} + \dfrac{1}{3^{-2}}+\dfrac{1}{5^{-2}}$

We know that,

$\boxed{ \: \: \: \tt \dfrac{1}{a^{-n}}=a^n \: \: \: \: }$

$\tt 2^2 +3^2+5^2$

$\tt :\implies 4 +9+25$

$\tt : \implies 13+25$

$\tt : \implies 38$