(2ab)^2*(a^2-b^2)-(2a^2b^2)^2/(4b^2)+4a^2b^4
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(2ab)^2*(a^2-b^2)-(2a^2b^2)^2/(4b^2)+4a^2b^4(2ab)^2*(a^2-b^2)-(2a^2b^2)^2/(4b^2)+4a^2b^4(2ab)^2*(a^2
(2ab)^2*(a^2-b^2)-(2a^2b^2)^2/(4b^2)+4a^2b^4
(2ab)^2*(a^2-b^2)-(2a^2b^2)^2/(4b^2)+4a^2b^4
(2ab)^2*(a^2-b^2)-(2a^2b^2)^2/(4b^2)+4a^2b^4
(2ab)²×(a²-b²)-(2a²b²)²/(4b²)+4a²b⁴
=4a²b²×(a²-b²)-4a⁴b⁴／(4b²)+4a²b⁴
=4a⁴b²-4a²b⁴-a⁴b²+4a²b⁴
=3a⁴b²
a+b/2ab
2AB/A+B
a+b/2ab
b/(a^2-ab)+c/(b^2-ab)+(a+b^2)/(a^2b-ab^2)
(a-b)平方-2ab(b-a)
(a-b)^3+2ab(a-b)
[(a^2-2ab)/-ab+b^2]/[(a/a+b)/(2ab/2b-a)]
（a-b）^2/ab-(a^2-b^2)/ab
(a+b-2ab)(a+b-2)+(1-ab)^2
（a+ab)-[(ab-2b)-a]-(-9ab),其中a+b=-7,ab=3.
a>2,b>2ab
b/a^2-ab,a/b^2-ab,ab/a^2-b^2通分
ab/a+b=3 a-2ab+b/2a-3ab+2b?
因式分解：a×a×a-2a×a×b+ab×b
a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快
a^2-3ab+b^2/ab=( )/ab-3
a^2-3ab+b^2/ab=( )/ab -3
计算：(a-b)[(a+b)^2-ab]+2(a+b)[(a-b)^2+ab]