Question

Cw 9 str 164 1gim proszę szybko xD

Answer 1

A/ x +x -1 = (-1) do potęgi 2 + (-1) - 1 = 1 + (-1) - 1 = -1 
b/ 2(-x + 4) = 2 * (-10) +4 = 2 * 14 = 28
c/ 1 - Y+ x = 1-(-1)+2 =4