提公因式(x+y-z)(x-y+z)+(y-x-z)(y-x+z) 這是因式分解

提公因式(x+y-z)(x-y+z)+(y-x-z)(y-x+z) 這是因式分解


(x+y-z)(x-y+z)+(y-x-z)(y-x+z)
=-(x+y-z)(-x+y-z)+(y-x-z)(y-x+z)
=(y-x-z)
=2(y-x-z)(-x+z)



(2x+y)的平方-(x+2y)的平方~選取公因式~


(2x+y)的平方-(x+2y)的平方
=4x方+4xy+y方-x方-4xy-4y方
=3x方-3y方
=3(x方-y方)
=3(x+y)(x-y)



分解因式x³;y-4xy³;5x(a+b)-y(b+a)的公因式是分解因式:3(x-2)-2x(x-2)
3(x-2)-2x(2-x)


x³;y-4xy³;=xy(x²;-4y²;)=xy(x+2y)(x-2y)5x(a+b)-y(b+a)公因式是(a+b)=5x(a+b)-y(a+b)=(5x-y)(a+b)3(x-2)-2x(2-x)=3(x-2)+2x(x-2)=(3+2x)(x-2)很高興為您解答,祝你學習進步!【the 190…