(-1/2ab^2)^2*8a^2b÷(-1/3a^3b^2)
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(-1/2ab^2)^2*8a^2b÷(-1/3a^3b^2)
(-1/2ab^2)^2*8a^2b÷(-1/3a^3b^2)
(-1/2ab^2)^2*8a^2b÷(-1/3a^3b^2)
(-1/2ab^2)^2*8a^2b÷(-1/3a^3b^2)
=1/4a^2b^4*8a^2b÷(-1/3a^3b^2)
=2a^4b^5÷(-1/3a^3b^2)
=6ab^3
(-1/2ab^2)^2*8a^2b÷(-1/3a^3b^2)
=1/4a^2b^4*8a^2b÷(-1/3a^3b^2)
=1/4×8×(-3)a^(2+2-3)b^(4+1-2)
=-6ab^3
=1/4a^2b^4*8a^2b÷(-1/3a^3b^2)
=2a^4b^5÷(-1/3a^3b^2)
=6ab^3
(a^2b-ab-a+1)/(ab^2+3ab-b-3)÷(a^2+a_2)/(b^2+b-6)
(a+b-2ab)(a+b-2)+(1-ab)^2
a+b/2ab
2AB/A+B
a+b/2ab
a(a-1)-(a×a-b)=-5,求(a×a+b×b)÷2-ab
已知a-b=,ab=1/8,求-2ab+ab+ab的值
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)
ab^3+b^2+b-a+1
化简 b²-a²/a²-ab÷(a+(2ab+b²/a))·(1/a+1/b)
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)其中a、b满足:-(8的a次方)的平方÷4的5-2b次方=(2的1-b次方)的平方,(9的a次方)的b次方=(3的b次方)的a次方÷27
已经a+b=1[(1/a)+1]*[(1/b)+1]=(a+b/a +a/a)(a+b/a +b/b)=(2a+b)(2b+a)/ab2a+b≥2*根号2ab2b+a≥2*根号2ba(2a+b)(2b+a)≥8ab所以(2a+b)(2b+a)/ab≥8,=(a+1)(b+1)/ab=ab+a+b+1/ab=ab+2/ab=2(a+b)/ab +1a+b≥2*根号ab(a+b)^2/4≥ab1/ab≥4a+b/ab≥4所
-5a(a^2b-ab^2)÷ab
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(a-b/ab)^2•(b-a/-a)^-3÷1/(a^2-b^2)
化简求值:(b+a)(-b+a)+(4ab^3-8a^2b^2)÷4ab a=2 b=-1