Answer:
20
Step-by-step explanation:
First, plug in -2 into each y:
3(-2)^2-4(-2)
Simplify 2^2 to 4:
3x4-4x-2
Simplify 3x4 to 12:
12-4x2
Simplify 4 x -2 to get -8:
12-(-8)
Remove parentheses:
12+8
