Qumatio as balcul: Resal aude

Qumatio as balcul: Resal aude $-(-2) \cdot 2+\frac{1}{(5)^{2}}=\cdots \frac{1}{25}$ a) $7^{-2}$ d) $2 \cdot 3$ B) $5^{-3}$ i) $(-3)^{2}$ c) $2^{-4}$ 4) $-(-3)^{-2}$