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saifoo.khanBest ResponseYou've already chosen the best response.2
x^4 = 16. Taking quad* root on both sides..
 one year ago

HeroBest ResponseYou've already chosen the best response.0
take 4th root of both sides, not quad root
 one year ago

sasogeekBest ResponseYou've already chosen the best response.0
hcmathkim, please don't answer snipe... especially with me :) thanks
 one year ago

saifoo.khanBest ResponseYou've already chosen the best response.2
dw:1354760904793:dw
 one year ago

hcmathkimBest ResponseYou've already chosen the best response.0
Set f(x) =0. 0 = (x^2 + 4) (x^2  4) = (x^2+4)(x+2)(x2) . (x^2+4) > 0 always so x=2, 2
 one year ago
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