(1)x^2+y^2-4x+2y+5=0,则x+2y= (2)-3x^2+6xy-3y^2(3)因式分解的应用:解方程2x^2=3x
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/23 05:26:24
(1)x^2+y^2-4x+2y+5=0,则x+2y=(2)-3x^2+6xy-3y^2(3)因式分解的应用:解方程2x^2=3x(1)x^2+y^2-4x+2y+5=0,则x+2y=(2)-3x^2
(1)x^2+y^2-4x+2y+5=0,则x+2y= (2)-3x^2+6xy-3y^2(3)因式分解的应用:解方程2x^2=3x
(1)x^2+y^2-4x+2y+5=0,则x+2y= (2)-3x^2+6xy-3y^2
(3)因式分解的应用:解方程2x^2=3x
(1)x^2+y^2-4x+2y+5=0,则x+2y= (2)-3x^2+6xy-3y^2(3)因式分解的应用:解方程2x^2=3x
(1)x²-4x+4+y²+2y+1=0,(x-2)²+(y+1)²=0,x-2=0,x=2,y+1=0,y=-1
(2)原式=-3(x²-2xy+y²)=-3(x-y)²
(3)2x²-3x=0,x(2x-3)=0,x=0或x=3/2