SOLUTION: Use the "difference of square" rule to factor the following expression: 9x^4-25y^2

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Use the "difference of square" rule to factor the following expression: 9x^4-25y^2      Log On


   

Question 630913: Use the "difference of square" rule to factor the following expression:
9x^4-25y^2
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+9x%5E4-25y%5E2+
+%28+3x%5E2+%29%5E2+-+%28+5y+%29%5E2+
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The rule is:
+a%5E2+-+b%5E2+=+%28+a+-+b+%29%2A%28+a+%2B+b+%29+
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+%28+3x%5E2+%29%5E2+-+%28+5y+%29%5E2++=+%28+3x%5E2+-+5y+%29%2A%28+3x%5E2+%2B+5y+%29+