已知log2^(2x+x^2)>3,则x的取值范围为
1个回答
log2^(2x+x^2)>3
log2^(2x+x^2)>log2^8
2x+x^2>8
x^2+2x-8>0
(x+4)(x-2)>0
x>2或x
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