Answer:
45
Step-by-step explanation:
c(x)=2x^2-4x-3
Let x= -4
c(-4)=2(-4)^2-4(-4)-3
= 2(16) +16-3
=32+16-3
c(-4) = 2(-4)² - 4(-4) - 3
= 2(16) + 16 - 3
= 32 + 13
= 45
