Question

Calculati:
(-3) la puterea 5*(+3) la puterea 7)*(-3 la puterea 2) la puterea 5:(-3 la puterea 4)la puterea 5

Answer 1

$(-3)^5\cdot(+3)^7\cdot [(-3)^2]^5:[(-3)^4]^5=-3^5\cdot 3^7\cdot3^{10}:3^{20}= \\ -3^{22}:3^{20}=-9$