Question

1. Choose the correct answer for the following:

(vii) (-2)^- 2 is equal to

(A) 1/2 (B) 1/4 (C) -1/2 (D) -1/4

Answer 1

Q. Choose the correct answer for the following :

(vii) (-2)^-2 is equal to

Solution :

As we know that,

(a)^-n = 1/(a^n)

So,

(-2)^-2 = 1/(-2)^2

= 1/(-2 × -2)

= 1/4

Hence, option (B) 1/4 is the correct answer.

Answer 2

Option ( B ) is correct.

Reason:

( -2 )^-2

= 1/( -2 )² [ Since a^-n = 1/aⁿ ]

= 1/4

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