a*2b*2-a*2-b*2-4ab+1因式分解
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a*2b*2-a*2-b*2-4ab+1因式分解
a*2b*2-a*2-b*2-4ab+1因式分解
a*2b*2-a*2-b*2-4ab+1因式分解
2 a^2b^2-a^2-b^2-4ab+1
=a^2b^2-2ab+1 -(a^2+b^2-2ab)
=(ab-1)^2-(a+b)^2
=(ab-1+a+b)(ab-1-a-b)
a+b/2ab
2AB/A+B
a+b/2ab
2a²b(a-b)+ab(a-b)²+4ab²(a-b)
1/4a^2b^2{3ab(a+b)-5a(ab-b^2)}=?
(a-b+ab-a^2/a+b)乘以[a+1/a-b乘以(1+a/b)]
急……ab/(a+b-1)(a+b) + ab/(a+b)(a+b+1) + ab(a+b+1)(a+b+2) + …… + ab/(a+b+98)(a+b+99) + ab/(a+b+99)(a+b+100)
计算ab/(a+b-1)(a+b)+ab/(a+b)(a+b+1)+ab/(a+b+1)(a+b+2)+.+ab/(a+b+98)(a+b+99)+ab/(a+b+99)(a+b+100)
(a+b-2ab)(a+b-2)+(1-ab)^2
计算:[(a-b)(a+b)]^2-(a^2+ab+b^2)(a^2-ab+b^2)+(4a^2b^2)(b-1)(b+1)
{ab-[3a²b-(4a²b+1/2ab)]-4a²b}+3a²b
4ab/b^2(a-b)=
ab^3+b^2+b-a+1
计算(a/a-b+b/b-a)/(1/a+b)的结果 (1)a-b (2)ab (3)a^2-b^2 (4)a+b
(a-b)平方-2ab(b-a)
(a-b)^3+2ab(a-b)
a-b/a^2+ab / ab-a^2/a^2b^2-b^4快
因式分解:a×a×a-2a×a×b+ab×b