Answer:
Step-by-step explanation:
y = 2x^2 - 4x - 5.......if x = -2
so sub in -2 for x
y = 2(-2^2) - 4(-2) - 5
= 2(4) + 8 - 5
= 8 + 8 - 5
= 11 <==== y is 11
