题目解方程:(1)x2+3x=0(1)x^{2}+3x=0(1)x2+3x=0；(2)3x(x−1)=2(1−x)(2)3x\left(x-1\right)=2\left(1-x\right)(2)3x(x−1)=2(1−x)；(3)x2−6x+12=0(3)x^{2}-6x+12=0(3)x2−6x+12=0；(4)x2−5x−2=0(4)x^{2}-5x-2=0(4)x2−5x−2=0.知识点：因式分解的应用章节：数与式 / 因式分解
