3(x-2)^2=x(x-2)
问题描述:
3(x-2)^2=x(x-2)
4(2x-1)^2 -(3x-2)^2=0
3x^2-6x+3=0
已知x^2-4x+y^2-6y+13=0,求x^2+y^2的值.
答
3(x-2)^2=x(x-2)3(x-2)=x (x=2)2x=6x=3、x=24(2x-1)^2 -(3x-2)^2=0[2(2x-1)-(3x-2)][2(2x-1)+(3x-2)]=0x(7x-4)=0x=0或x=4/73x^2-6x+3=03(x-1)^2=0x=1x^2-4x+y^2-6y+13=0(x+2)^2+(y-3)^2=0所以x=-2y=3x^...