X^2+3y-4+2(x-z) when x=7 y=5 and y=-3
7^2 + 3(5) - 4 + 2(7- -3)49 + 15 - 4 + 2(10)49 + 15 - 4 + 2080
The answer is 80!!!(Use gemdas / pemdas)