Question

(- 5)^-3 × (- 5)^-4 = .........................

A) (-5)^-7

B) (-5)⁷ 

C) \(\frac{1}{(5)^7}\)

D) \(\frac{1}{(-5)^{-7}}\)

Answer 1

Correct option is (A) (-5)^-7

\((-5)^{-3}\times(-5)^{-4}=(-5)^{(-3)+(-4)}\)

= \((-5)^{-7}\)

Answer 2

Correct option is  A) (-5)^-7