Question

Evaluate z + 2+ z for x = 2, y=-3, z = -4.

Answer 1

-6

Explanation:

Are you sure that z + 2+ z is correct? x and y do not appear here.

z + 2+ z simplifies to 2z + 2, and so, if z = -4, z + 2+ z has the value

2(-4) + 2, or -6.