SOLUTION: factor the polynomial. 9x^2-64. I wasnt sure how to do this since it isnt in the form of ax^2+bx+c=0 hope you can help!! THANKS!

Algebra ->  Algebra  -> Quadratic Equations and Parabolas -> SOLUTION: factor the polynomial. 9x^2-64. I wasnt sure how to do this since it isnt in the form of ax^2+bx+c=0 hope you can help!! THANKS!      Log On

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Question 168679: factor the polynomial.
9x^2-64.
I wasnt sure how to do this since it isnt in the form of ax^2+bx+c=0
hope you can help!! THANKS!
Answer by stanbon(57377) About Me  (Show Source):
You can put this solution on YOUR website!
9x^2-64.
The form is a^2 - b^2 which factors as (a-b)(a+b)
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(3x)^2 - 8^2 = (3x-8)(3x+8)
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Cheers,
Stan H.