x²-x-3/4=0x²-x+1/4-1/4-3/4=0(x-1/2)²=1x-1/2=±1X=1/2±1X1=1.5,X2=-0.5
(x-0.5)平方=1
题有问题吧
x²-x=¾x²×2×x×½+¼=1……