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June 30, 2015

Homework Help: calculus

Posted by Anonymous on Saturday, September 3, 2011 at 3:33pm.

Factor and solve for x

1) x^4 - 9x^2> 0

2) 4x2^x - x^3 2^x<or equal to 0

I dont know where to start on 1 but for 2 I got
X<or equal to -4 or x> or equal to 4

Could some one please explain how to do 1 and tell me if I did 2 correctly?

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