Question 65984
FOIL is a method of multiplying binomials.

(5+x)(3-2x)

F-First terms multiplied 
  = 5*3 = 15

O-Outer terms multiplied
  = 5*(-2x)
  = - 10x

I-Inner terms multiplied
 = x*3
 = 3x

L-Last terms multiplied
 = x*(-2x)
 = -2x^2

Thus (5 + x)(3 - 2x)
     = 15 - 10x + 3x - 2x^2
    = 15 - 7x - 2x^2


Good luck!!!