Question

Calculati va rog! Repede))

Answer 1

$(-1)^1-(-1)^2+(-1)^3-(-1)^4+(-1)^5= \\ =-1-1-1-1-1=-5$

Answer 2

$(-1)^{1}- (-1)^{2}+ (-1)^{3}- (-1)^{4}+ (-1)^{5}=-1-1-1-1-1=-5$