5a+3[2b-3(a-b+2c)-(b+c)]
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5a+3[2b-3(a-b+2c)-(b+c)]5a+3[2b-3(a-b+2c)-(b+c)]5a+3[2b-3(a-b+2c)-(b+c)]5a+3[2b-3(a-b+2c)-(b+c)]=5a+
5a+3[2b-3(a-b+2c)-(b+c)]
5a+3[2b-3(a-b+2c)-(b+c)]
5a+3[2b-3(a-b+2c)-(b+c)]
5a+3[2b-3(a-b+2c)-(b+c)]
=5a+3(2b-3a+3b-6c-b-c)
=5a+3(-3a+4b-7c)
=5a-9a+12b-21c
=-4a+12b-21c
老大,化简就是这样了,不过你想干啥呢?
2a(a+b-c)-3b(a+b-c)+5c(c-a-b)
化简:7(a-b-c)-5(a+b-c)+3(a-b-c)+(a+b-2)
A=B+B+B+B+B+B+B+B+B+B+B+B+B+B+B A-B×3=C C+2×7+2=1A=B+B+B+B+B+B+B+B+B+B+B+B+B+B+BA-B×3=CC+2×7+2=148148-(C-32)=DA,B,C,D各是多少?
(a-b+c/a+b-c)-(a-2b+3c/b-c+a)+(b-2c/c-a-b)
已知:(a-b)(b-c)(c-a)/(a+b)(b+c)(c+a)=5/132,求a/(a+b)+b/(b+c)+c/(c+a)的值!(请尽快,我有急用,a/(a+b)+b/(b+c)+c/(c+a)=1/2[(a-b)/(a+b)+(b-c)/(b+c)+(c-a)/(c+a)]+3/2 (a-b)/(a+b)+(b-c)/(b+c)+(c-a)/(c+a) 没有错吧...
化简:5(a-2b+c)-4(-a+b-c)+4(3a-2b)
(a-b)(b-c)(c-a)/(b-a)(a-c)2(c-b)3
初二分式的加减法2a-b-c/(a-b)(a-c)+ 2b-c-a/(b-c)(b-a)+ 2c-b-a/(c-b)(c-a)3a-6b/a+b- 5a-6b/a-b- 4a-5b/a+b+ 7a-8b/b-a注:有空格的地方是下一个分式
5a-{-3b+[6c-2a-(a-c)]}-[9a-(7b+c)]
2a(b-c)+3(c-b)
(a+b-c)^5(a-b-c)^2(c-a-b)^4(c+b-a)^3 计算
分解因式:2a(a+b-c)-3b(a+b-c)+5c(c-a-b)
2a(a+b+c)-3b(a+b+c)+5c(c-a-b)分解因式
2a(a+b+c)-3b(a+b-c)+5c(c-a-b)分解因式
化简|a-b|-2c-|c+b|+|3b| c
a-b=5,b-c=3,(c-a)(2b-a-c)=
(a+b-c)^3*(c-b-a)^2*(a+b-c)^6 等于?)
5a+3[2b-3(a-b+2c)-(b+c)]