(aa-bb)(aa-bb)/(a-b)(a-b)
(aa-bb)(aa-bb)/(a-b)(a-b)
a/b=2,求(aa-ab+bb)/(aa+bb)
已知a+b=2求(aa-bb)(aa-bb)-8(aa+bb)的值
(a+b)(aa-ab+bb)=?
[aa+bb-1/(aa)--1/(bb)]/[aabb-1/(aa)1/(bb)]+[(a-1/a)(b-1/b)]/
计算(a+b)(aa-ab+bb)-(a+b)(a+b)
aa*bb+aa+bb+1=4ab 求2a+b的值
证明a(bb+cc)+b(cc+aa)+c(aa+bb)>6abc
a.aa=b.bb.a-b=?
a+b=2,那么aa-bb+4b=?
正则表达式(aa|b)*(a|bb)*的含义
aa-ab-bb=0 求a/b=?