SOLUTION: reverse foil/or trial factoring/solve
16x^4-81
Algebra.Com
Question 299485: reverse foil/or trial factoring/solve
16x^4-81
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
16x^4-81
(4x^2+9)(4x^2-9)
(4x^2+9)(2x+3)(2x-3) ans.
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