Mathematics for IGCSE & O level - Indices 2 (Section 3 - No. 16)

If (x = 2), what is the value of (x^{-2})?

-4

(rac{1}{4})

-2

Substituting and then applying the negative exponent rule: (2^{-2} = rac{1}{2^2} = rac{1}{4}).