SOLUTION: 16x^4 - 40x^2 + 9 Factor completely

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Question 192323: 16x^4 - 40x^2 + 9 Factor completely
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
16x^4 - 40x^2 + 9
(4x^2-1)(4x^2-9)
(2x+1)(2x-1)(2x+3)(2x-3) ans.