My math teacher said to use the FOIL (First Outer Inner Last) property to simplify these quadratic equations I have made from looking at two parabolas.

Question

Here are my equations & how would you use the FOIL property on each of the equations and also can someone help me with finding a for the second equation:

y=-15/20.25(x+1.5)^2+0
y=a(x+2)^2+1.5

Answer 1

(x+1.5)(x+1.5) = x^2 + 1.5 x + 1.5 x + (1.5*1.5)

= x^2 + 3 x + 2.25

get it?

Answer 2

So then how would I put it into the original equation, Damon?