用因式分解解方程x-2=x(x-2)4x^2-169=0(x-5)^2=2(5-x)2x(x-3)=9-3x(x+4)^2-16x^2=0(3-y)^2+y^2=9

问题描述:

用因式分解解方程
x-2=x(x-2)
4x^2-169=0
(x-5)^2=2(5-x)
2x(x-3)=9-3x
(x+4)^2-16x^2=0
(3-y)^2+y^2=9

1.x-2=x(x-2)(x-2)(x-1)=0x=2或x=12.4x^2-169=0(2x+13)(2x-13)=0x=-13/2或x=13/23.(x-5)^2=2(5-x)(x-5)^2-2(5-x)=0(x-5)^2+2(x-5)=0(x-5)(x+2)=0x=5或x=-24.2x(x-3)=9-3x2x(x-3)=3(3-x)(x-3)(2x-3)=...