(3-x)(3-x)怎么化简
问题描述:
(3-x)(3-x)怎么化简
答
(3-x)(3-x)
=3*3-3*x-x*3+x*x
=9-6x+x^2
(3-x)(3-x)怎么化简
(3-x)(3-x)
=3*3-3*x-x*3+x*x
=9-6x+x^2