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OpenStudy (anonymous):
(-x)^4+9(-x)^2-4
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OpenStudy (dumbcow):
that can be simplified to: x^4 +9x^2 -4
OpenStudy (anonymous):
Please explain?
OpenStudy (dumbcow):
(-2)^4 = (-2)(-2)(-2)(-2) = 2^4 = 16 when there are even num of neg signs it always becomes positive
OpenStudy (anonymous):
Okie-dokie :) thank you
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