The problem to solve is: (x+4)(8-x) x+4 evaluates to x+4 8-x evaluates to 8-x Multiplying x+4 by 8-x is a classic Algebra problem. Here, you are trying
to multiply two binomials together (two expressions that each contain two terms).
Your book might call this finding the "Product of Two Binomials".
To work this problem, we'll use the "F.O.I.L." method. F.O.I.L. stands
for First, Outer, Inner, Last.
First, we'll multiply the two First terms, the x and 8 together.
Multiply x and 8 Multiply x and 1 The x just gets copied along. The answer is x x x × 8 = 8x
