计算 (a²-3a+2分之2a-6 )-(a-1分之3)-(2-a分之2)
来源:学生作业帮 编辑:百度作业网作业帮 分类:数学作业 时间:2024/08/19 10:35:58
计算 (a²-3a+2分之2a-6 )-(a-1分之3)-(2-a分之2)
![计算 (a²-3a+2分之2a-6 )-(a-1分之3)-(2-a分之2)](/uploads/image/z/7460383-31-3.jpg?t=%E8%AE%A1%E7%AE%97+%28a%26%23178%3B-3a%2B2%E5%88%86%E4%B9%8B2a-6+%29-%28a-1%E5%88%86%E4%B9%8B3%EF%BC%89-%EF%BC%882-a%E5%88%86%E4%B9%8B2%EF%BC%89)
((a²-3a+2分之2a-6)-(a-1分之3)-(2-a分之2)
=(2a-6)/(a²-3a+2)-3/(a-1)-2/(2-a)
=(2a-6)/[(a-1)(a-2)]-3/(a-1)+2/(a-2)
=(2a-6)/[(a-1)(a-2)]-3(a-2)/[(a-1)(a-2)]+2(a-1)/[(a-1)(a-2)]
=(2a-6-3a+6+2a-2)/[(a-1)(a-2)]
=(a-2)/[(a-1)(a-2)]
=1/(a-1)
=(2a-6)/(a²-3a+2)-3/(a-1)-2/(2-a)
=(2a-6)/[(a-1)(a-2)]-3/(a-1)+2/(a-2)
=(2a-6)/[(a-1)(a-2)]-3(a-2)/[(a-1)(a-2)]+2(a-1)/[(a-1)(a-2)]
=(2a-6-3a+6+2a-2)/[(a-1)(a-2)]
=(a-2)/[(a-1)(a-2)]
=1/(a-1)
计算 (a²-3a+2分之2a-6 )-(a-1分之3)-(2-a分之2)
计算a-3分之1(a+b)+2分之1(a-b)-6分之1(a-2b)
计算3a+(1+a-2分之1)×a-1分之a²-2a
计算a²-2a分之a+3-a分之1÷9-a²分之2-a
计算a+a-2分之3-1
计算:M/(5分之M+3分之M) (A分之3-2A分之1)*4A
计算a-1分之3减2-a分之2,
计算 (a²+2a分之a-2 - a²+4a+a分之a-1 ) ÷ a+2分之a-4
计算 看图 (a²+2a分之a-2 - a²+4a+a分之a-1 )÷ a+2分之a-4
计算:a(a+1)分之1+(a+1)(a+2)分之1+(a+2)(a+3)分之1+(a+3)(a+4)分之1+...+(
计算(a+1)(a+2)分之1+(a+2)(a+3)分之1+(a+3)(a+4)分之1+(a+4)(a+5)分之1
计算a+1分之a+2-a+2分之a+3-a-3分之a-4+a-4分之a-5