SOLUTION: Rewrite the middle term as the sum of two terms and then factor by grouping x^2+4x-21 Thank you

Algebra ->  Exponents-negative-and-fractional -> SOLUTION: Rewrite the middle term as the sum of two terms and then factor by grouping x^2+4x-21 Thank you      Log On


   

Question 98249: Rewrite the middle term as the sum of two terms and then factor by grouping
x^2+4x-21
Thank you
Answer by tutorcecilia(2152) About Me  (Show Source):
You can put this solution on YOUR website!
x^2+4x-21
x^2-3x+7x-21
(x-3)(x+7)