Evaluate: $(-2)^{-2}$ $-2^{-2}$ $2^{-2}$ Explain what the negative sign does in each expressio

Question

Evaluate: $(-2)^{-2}$ $-2^{-2}$ $2^{-2}$ Explain what the negative sign does in each expression.

Accepted Answer

(a) $\frac14$; (b) $-\frac14$; (c) $\frac14$.

Indices