SOLUTION: hello, how would you factor each polynomial: a) x^2 - 100 b) 4y^2 - 49 thank you!

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: hello, how would you factor each polynomial: a) x^2 - 100 b) 4y^2 - 49 thank you!      Log On


   

Question 63971: hello,
how would you factor each polynomial:
a) x^2 - 100
b) 4y^2 - 49
thank you!
Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
The rule for factoring the difference of squares is highlight%28a%5E2-b%5E2=%28a%2Bb%29%28a-b%29%29
a) x^2 - 100 a=x, b=10
(x+10)(x-10)
:
b) 4y^2 - 49 a=2y, b=7
(2y+7)(2y-7)
:
Happy Calculating!!!