乘法公式1、平方差公式一、填空题⑴ (b + a)(b－a) = _______________, (x－2) (x + 2) = _________________；⑵ (3a + b) (3a－b) =________________, (2x2－3) (－2x2－3) = ______________________；⑶2294)3)(______3(______________,__________)2132)(2132(babbaa⑷ (x + y) (－ x + y) =...

时间:2024-11-30 03:22栏目:行业资料