(2ab^2)^-2(a^2b)^2/(3a^3b)^2(ab^3)^-2

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(2ab^2)^-2*(a^2b)^2/(3a^3b)^2*(ab^3)^-2
(2ab^2)^-2*(a^2b)^2/(3a^3b)^2*(ab^3)^-2

(2ab^2)^-2*(a^2b)^2/(3a^3b)^2*(ab^3)^-2
(2ab^2)^-2*(a^2b)^2/(3a^3b)^2*(ab^3)^-2
=1/4a^-2b^-4*a^4b^2/(9a^6b^2*a^-2b^-6)
=1/4a^2b^-2/(9a^4b^-4)
=1/4a^2b^-2*(a^-4b^4)*1/9
=1/4*a^-2b^2*1/9
=a^-2b^2/36
=b^2/(36a^2)

=(a²b)²(ab³)²/(2ab²)²(3a³b)²
=(a^4b²)(a²b^6)(4a²b^4)(9a^6b²)
=a^6b^8/36a^8b^6
=b²/36a²题目有负指数的，还有，我想的是：eg.4a^2/a^2b^2=4...

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=(a²b)²(ab³)²/(2ab²)²(3a³b)²
=(a^4b²)(a²b^6)(4a²b^4)(9a^6b²)
=a^6b^8/36a^8b^6
=b²/36a²

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因为|a+3b+1|+(2a+4)²=0，两个非负数的和为0，这两个非负数都为0
所以a+3b+1=0且2a+4=0
a=-2, b=1/3
原式=3a²b-(2ab²-2ab+3a²b)+2ab
=3a²b-2ab²+2ab-3a²b+2ab
=(3a²b-3a²b...

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因为|a+3b+1|+(2a+4)²=0，两个非负数的和为0，这两个非负数都为0
所以a+3b+1=0且2a+4=0
a=-2, b=1/3
原式=3a²b-(2ab²-2ab+3a²b)+2ab
=3a²b-2ab²+2ab-3a²b+2ab
=(3a²b-3a²b)-2ab²+(2ab+2ab)
=0-2ab²+4ab
=-2ab²+4ab
当a=-2, b=1/3时
原式=-2×(-2)×(1/3)²+4×(-2)×1/3
=-2×(-2)×1/9+4×(-2)×1/3
=4/9-8/3
=4/9-24/9
=-20/9

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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]