2a-{6a+[5b-3a-(-5b-3a)}-5a}
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2a-{6a+[5b-3a-(-5b-3a)}-5a}2a-{6a+[5b-3a-(-5b-3a)}-5a}2a-{6a+[5b-3a-(-5b-3a)}-5a}=2a-{6a+[5b-3a+5b+3
2a-{6a+[5b-3a-(-5b-3a)}-5a}
2a-{6a+[5b-3a-(-5b-3a)}-5a}
2a-{6a+[5b-3a-(-5b-3a)}-5a}
=2a-{6a+[5b-3a+5b+3a]-5a}
=2a-(6a+10b-5a)
=2a-(a+10b)
=2a-a-10b
=a-10b
5(a*a*b-3*a*a*b)-2*(a*a*b-7*a*b*b)
2(a+b)-[4(a+b)-3(a+b)]一[5(a-b)+(a-b)]过程
(a-b)5次方×(b-a)3次方+(a-b)2次方×(a-b)6次方
(a-b)^5x(b-a)^3+(a-b)^2x(a-b)^6
计算(5a-3b)^2+(a+b)(a-b)
2a+b/3a+5b 求a/b
已知a-b/a+b=-3,则代数式2(a-b)/a+b-5(a+b)/a-b=?
已知a-b/a+b=-3,则代数式2(a-b)/a+b-5(a+b)/a-b=?
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-a+2b
(a-2b)(5a+3b)
(3a-6b)/(a+b) - (5a-6b)/(a-b) - (4a-5b)/(a+b) - (7a-8b)/(a-b) 快
(3a-6b/a+b)-(5a-6b/a-b)-(4a-5b/a+b)-(7a-8b/b-a)
[(-a-3b)(-a+3b)-(-3b+a)^2]÷(-6/5a)
因式分解:(a+1)(a+3)(a+5)(a+7)+15 a(a-b+2)-6b(b+1)(a+1)(a+3)(a+5)(a+7)+15a(a-b+2)-6b(b+1)
2a-{6a+[5b-3a-(-5b-3a)}-5a}
a+a-a+2a-3a-2b+3b-5b+3b-4b-5b
因式分解(a-b)平方-3a+3b(a+b)(a-b)-2b(3a-5b)两个哈