Question

evaluate (i) [-5/7]-² (ii) [(-1/2)⁵]‐²
please answer and give explanation​

Answer 1

Answer:

1. [-5/7]-²=-7/5²

bro we can make the exponents positive by taking denominator to numerator vice versa to it also

-7/5×-7/5

by multiplication two minus becomes plus

then,

49/25

2. [(-1/2)⁵]-²

bro formula is (a^m)^n=a^m×n

(-1/2)⁵×-²

-1/2-¹⁰

again same we should make exponent positive

(-2)¹⁰

-2×-2×-2×-2×-2×-2×-2×-2×-2×-2

768