因式分解法3(x-2)=x(x-2)

问题描述:

因式分解法3(x-2)=x(x-2)

3(x-2)=x(x-2); 3(x-2)-x(x-2) =0; (x-2)(3x-6-x)=0; (x-2)(2x-6)=0; 2(x-2)(x-3)=0; x-2=0;x=2; x-3=0;x=3