(2x-1)²=(x+2)²(2x-1)²-(x+2)²=0(2x-1+x+2)(2x-1-x-2)=0(3x+1)(x-3)=0x= -3分之1,或者,x=3(2x-1)²=(x+2)²x+2=2x-1,或者,x+2=1-2xx=3,或者,x= -3分之1