(4x-3)²=04x-3=0x=3/4配方的话x²-3x/2=-9/16x²-3x/2+9/16=-9/16+9/16(x-3/4)²=0x=3/4
16x2-24x+9=0(4x-3)²=04x-3=0x1=x2=¾
16x2-24x+9=0(4x-3)^2=04x-3=0x=3/4
32-24x+9=024x=41x=41/24
