(a-b)(c+b)怎么开括号
问题描述:
(a-b)(c+b)怎么开括号
答
(a-b)(c b)
=a(c b)-b(c b)
=ac ab-bc-b2
(a-b)(c+b)怎么开括号
(a-b)(c b)
=a(c b)-b(c b)
=ac ab-bc-b2