
Mary Ann F. answered 12/28/14
Tutor
5.0
(1,040)
Math & Science... Algebra and Geometry specialist
Hi Trisha -
Try the distribution process I showed you in the other problems, FOIL
First term products (3x * 7x)
Outside terms (far left and right terms are 3x and -3)
inside terms (7 * 7x)
last terms (7 * -3)
collect like terms from the two products that contain x.
try it ......