2ab/(a-b)(a-c)+2bc/(a-b)(c-a)
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2ab/(a-b)(a-c)+2bc/(a-b)(c-a)2ab/(a-b)(a-c)+2bc/(a-b)(c-a)2ab/(a-b)(a-c)+2bc/(a-b)(c-a)=2ab/(a-b)(a-
2ab/(a-b)(a-c)+2bc/(a-b)(c-a)
2ab/(a-b)(a-c)+2bc/(a-b)(c-a)
2ab/(a-b)(a-c)+2bc/(a-b)(c-a)
=2ab/(a-b)(a-c)-2bc/(a-b)(a-c)=(2ab-2bc)/(a-b)(a-c)=2b(a-c)/(a-b)(a-c)=2b/(a-b)
因式分解:ab*b+c*c+ca*a+a*ab+b*bc+c*ca+2abc
2ab/(a-b)(a-c)+2bc/(a-b)(c-a)
(a+b+c)(a^2+b^2+c^2-ab-ac-bc)+3ab=
初二数学竞赛计算题,在线等!1. 1/(a-b)+1/(a+b)-[(a-b)/(a^2-ab+b^2)]-[(a+b)/(a^2-ab+b^2) ]2. (b-c)/(a^2-ab-ac+bc)+(c-a)/(b^2-bc-ab+ac)+(a-b)/(c^2-ac-bc+ab)3. (a-b)/(a+b)+(b-c)/(b+c)+(c-a)/+(c+a)+[(a-b)(b-c)(c-a)/(a+b)(b+c)(c+a)]4. [-ac/(a-b)
因式分解a^2+b^2+c^2-ab-bc-ca
a>b>c,bc^2+ca^2+ab^2
化简a^2+b^2+c^2-ab-bc-ac
a^2+b^2+c^2-ab-bc-ac因式分解
a^2+b^2+c^2-ab-bc-ac
a>b>c求证 bc^2+ca^2+ab^2
若a-b=3,b-c=2,求a+b+c-ab-bc-ac
若a,b,c两两不等,求(2a-b-c) / (a^2-ab-ac+bc)+(2b-c-a) / (b^2-ab-bc+ac)+(2c-a-b) / (c^2-bc-ac+ab)的值.
若a,b,c互不相等,求2a-b-c/a²-ab-ac+bc +2b-c-a/b²-ab-bc+ac +2c-a-b/c²-ac-bc+ab的值
化简:(b-c)/(a^2-ab-ac+bc)+(c-a)/(b^2-bc-ab+ac)+(a-b)/(c^2-ac-bc+ab)化简:(b-c)/(a^2-ab-ac+bc)+(c-a)/(b^2-bc-ab+ac)+(a-b)/(c^2-ac-bc+ab)
化简:bc-a^2+ca-b^2+ab-c^2/a(bc-a^2)+b(a-b^2)+c(ab-c^2)
2a*a-b*b-ab+bc+2bc
a^2+b^2-c^2+2ab /a^2-b^2-c^2-2bc
因式分解:a^2b+b^2c+c^2a-ab^2-bc^2-ca^2