(a-b)(aa+ab+bb)+(b-a)(aa+bb)=
a/b=2,求(aa-ab+bb)/(aa+bb)
(a+b)(aa-ab+bb)=?
已知a+b=2求(aa-bb)(aa-bb)-8(aa+bb)的值
aa*bb+aa+bb+1=4ab 求2a+b的值
(aa-bb)(aa-bb)/(a-b)(a-b)
aa-ab-bb=0 求a/b=?
计算(a+b)(aa-ab+bb)-(a+b)(a+b)
b(b+2)-bb+2a=4 求aa+2ab+bb-1=?
已知a+b=7,ab=12,求aa+ab+bb的值,aa+3ab+bb的值
当a+b=3,ab=0.5时,aa+bb=?,aa+bb+ab=?,aaaa+bbbb=?
已知a(a-1)=aa-b-5,求aa/2+bb/2-ab的值
a.aa=b.bb.a-b=?