Question

2x + (x + y)2
x= 3
y= 6
z= -2

Answer 1

87 is the (x+y)2 is supposed to be (x+y)^2

Explanation:

2x+(x+y)2

2(3)+(3+6)2

6+(9)2

6+81

87

Answer 2

24

Explanation:

2x + (x + y)2 = 6 + (3+6)2 = 6 + 18 = 24

I don't understand why did you write about z, it's not needed.

:)