calculus
posted by Anonymous .
Factor and solve for x
1) x^4  9x^2> 0
2) 4x2^x  x^3 2^x<or equal to 0
I don't 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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