2(x-3)^2+(3x-x^2)=0 ½(x-2)^2+x-2=0

问题描述:

2(x-3)^2+(3x-x^2)=0 ½(x-2)^2+x-2=0
如题.

2(x-3)^2+(3x-x^2)=02x²-12x+18+3x-x²=0x²-9x+18=0(x-3)(x-6)=0x1=3 ,x2=6½(x-2)^2+x-2=0(x-2)²+2x-4=0x²-4x+4+2x-4=0x²-2x=0x(x-2)=0x1=0 ,x2=2