题目下列由左边到右边的变形中,属于因式分解的（ ）A.5x2y−10xy2=5xy(x−2y)5x^{2}y-10xy^{2}=5xy\left(x-2y\right)5x2y−10xy2=5xy(x−2y)B.p(q+h)=(pq+ph)p\left(q+h\right)=\left(pq+ph\right)p(q+h)=(pq+ph)C.4a2−4a+1=4a(a−1)+14a^{2}-4a+1=4a\left(a-1\right)+14a2−4a+1=4a(a−1)+1D.x+2y=(x+y)+yx+2y=\left(x+y\right)+yx+2y=(x+y)+y知识点：因式分解的意义章节：数与式 / 因式分解
