题目解方程:(1)x2+4x−1=0(1)x^{2}+4x-1=0(1)x2+4x−1=0；(2)5x(x+2)=3(x+2)(2)5x\left(x+2\right)=3\left(x+2\right)(2)5x(x+2)=3(x+2).知识点：运用公式法章节：数与式 / 因式分解
