Question

If the value of the x=4 y=3 and z=-2 find value of

A. (x+y)² - 2z B. 2xy-3z C. 2x²-4y+z​

Answer 1

Hope this helps. I know I was the second but I had already solved it so decided why not?

Answer 2

Explanation:

A=(4+3)²-2(-2)=7²+4=49+4=53

B=2(4)(3)-3(-2)=24+6=30

c=2(4)²-4(3)+(-2)=2(16)-12-2=32-14=18