Question

(m+n)^2-m-n 6(p+q）^2-12（p+q) -5x^2+10xy-25xy^2 提公因式

在线等回答对在加分

Answer 1

(m+n)^2-m-n=(m+n)^2-(m+n)=(m+n)(m+n-1)

6(p+q）^2-12（p+q)=6[(p+q）^2-2(p+q)]=6(p+q)(p+q-2)

-5x^2+10xy-25xy^2=-5[(x^2-2xy+y^2)+4y^2]=-5[(x-y)^2+4y^2]