SOLUTION: which of the following is a pattern for multiplying the sum and diffrence of the same terms, a + b a. a2 + 2ab + b2 b. a2 + b2 c. a2 + ab + b2 d. a2 - b2

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: which of the following is a pattern for multiplying the sum and diffrence of the same terms, a + b a. a2 + 2ab + b2 b. a2 + b2 c. a2 + ab + b2 d. a2 - b2      Log On


   

Question 69147: which of the following is a pattern for multiplying the sum and diffrence of the same terms, a + b
a. a2 + 2ab + b2
b. a2 + b2
c. a2 + ab + b2
d. a2 - b2
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Use FOIL to get:
(a+b)(a-b) = a(a-b)+b(a-b)
= a^2-ab+ab-b^2
=a^2-b^2
Cheers,
Stan H.