SOLUTION: factor each polynomial, if possible. if the polynomial cannot be factored, write prime. 2x^4-18x^2 9a^2+42a-49

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: factor each polynomial, if possible. if the polynomial cannot be factored, write prime. 2x^4-18x^2 9a^2+42a-49      Log On


   

Question 741420: factor each polynomial, if possible. if the polynomial cannot be factored, write prime.
2x^4-18x^2

9a^2+42a-49
Answer by blwinbbbles(106) About Me  (Show Source):
You can put this solution on YOUR website!
2x^4-18x^2
First factor out 2x^2 so now you have
(2x^2)(x^2-9) which is the difference betweent two squares
(2x^2)(x-3)(x+3)
The second one I believe is prime. I cannot find a solution to it