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OpenStudy (anonymous):
x^4-20x^2=64=0 find the real or imginary solutions by factoring
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OpenStudy (anonymous):
Is that supposed to be +64?
OpenStudy (anonymous):
If so, then simplify to (x^2-16)(x^2-4) and get x^2=16, x^2=4 then x=+/-4, x=+/-2
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