Question

"Determine o valor de x.y sendo x=(-2)^4:4^2-4^2:(-2)^3 e y= [(-1)^3-(-1)^5.(-1)^4]+(-1)^7"

Answer 1

x= (-2)^4:4^2 - 4^2 : (-2)^3
x= 16/16 - 16 : -8
x= 16/-8
x= -2

y= |(-1)^3-(-1)^5(-1)^4|+(-1)^7
y= |-1 +1 +1| -1
y= 1 (-1)
y = -1