Question 256600
6x^4-39x^2+60
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2x^4 - 13x^2 + 20
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2x^4 - 8x^2 - 5x^2 + 20
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2x^2(x^2 - 4) - 5(x^2- 4)
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(x^2-4)(2x^2-5)
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(x-2)(x+2)(2x^2-5)
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Cheers,
stan H.