题目用恰当的方法解方程:(1)(x−3)2−9=0(1)\left(x-3\right)^{2}-9=0(1)(x−3)2−9=0；(2)x2+4x−1=0(2)x^{2}+4x-1=0(2)x2+4x−1=0；(3)x2−3x−2=0(3)x^{2}-3x-2=0(3)x2−3x−2=0；(4)(x−1)(x+3)=5(x−1)(4)\left(x-1\right)\left(x+3\right)=5\left(x-1\right)(4)(x−1)(x+3)=5(x−1).知识点：整式的除法、因式分解的应用章节：未标注
