x(x-3)+2(3-x)和3x(y-z)+9z-y)公因式法要具体的过程,
问题描述:
x(x-3)+2(3-x)和3x(y-z)+9z-y)公因式法要具体的过程,
答
x(x-3)+2(3-x)
=x(x-3)-2(x-3)
=(x-3)(x-2)
3x(y-z)+9(z-y)
=3(y-z)(x-3)