若 log2(x^2-3x-2)+i(x2+4x+4)>1
=>x^2-3x-2>2
x^2+4x+4=0
=>(x-4)(x+1)>0
(x+2)^2=0
=>x4
x=-2
=>x=-2log2ȥ����?�� log2(x2-3x-2)>1=log2��2��.