3a+b+5a+2b. 4(e-2)-2(e+1).(2x+1)(x-2) find y if x=-2

Answer 1

3a+b+5a+2b = 3a+5a + b+2b = 8a+3b

4(e-2)-2(e+1) = 4e-8-2e-2 = 2e-10

if y(x) = (2x+1)(x-2)
y(-2) = (2(-2)+1)(-2-2) = (-4+1)(-4) = 12