1.2a(a+b)-4a 2.简算7×3.2-3×(-3.2) 2.8×8+4.6×8+1.3×16
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5(a*a*b-3*a*a*b)-2*(a*a*b-7*a*b*b)
(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)
2a-{7b+[4a-7b-(2a-6a-4b)]-3a
(3a+4b)(7a-8b)+(11a+2b)(8a-7a)
(3a-4b)(7a-8b)+(11a-12b)(8b-7a)
a-4b分之3a+4b-a分之a+b-a-4b分之7b=
3a/a-4b +a+b/4b-a -7b/a-4b求过程
2a(a-b)+4a(2a+3b)
1.2a(a+b)-4a 2.简算7×3.2-3×(-3.2) 2.8×8+4.6×8+1.3×16
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
紧急!1.(a^2+3)(a-2)-a(a^2-2a-2)=?2.(3/5a^5b^3+9/5a^7b^4-9/2a^5b^5)除以3/4a^5b^3)=?1.(a^2+3)(a-2)-a(a^2-2a-2)=?2.(3/5a^5b^3+9/5a^7b^4-9/2a^5b^5)除以3/4a^5b^3)=?
1.(a^2+3)(a-2)-a(a^2-2a-2)=?2.(3/5a^5b^3+9/5a^7b^4-9/2a^5b^5)除以3/4a^5b^3)=?1.(a^2+3)(a-2)-a(a^2-2a-2)=?2.(3/5a^5b^3+9/5a^7b^4-9/2a^5b^5)除以3/4a^5b^3)=?
1.(a^2+3)(a-2)-a(a^2-2a-2)=?2.(3/5a^5b^3+9/5a^7b^4-9/2a^5b^5)除以3/4a^5b^3)=?1.(a^2+3)(a-2)-a(a^2-2a-2)=?2.(3/5a^5b^3+9/5a^7b^4-9/2a^5b^5)除以3/4a^5b^3)=?
紧急!1.(a^2+3)(a-2)-a(a^2-2a-2)=?2.(3/5a^5b^3+9/5a^7b^4-9/2a^5b^5)除以3/4a^5b^3)=?1.(a^2+3)(a-2)-a(a^2-2a-2)=?2.(3/5a^5b^3+9/5a^7b^4-9/2a^5b^5)除以3/4a^5b^3)=?
计算:3a+4b/a-b+3b/b-a-4a/a-b
2(a+b)-[4(a+b)-3(a+b)]一[5(a-b)+(a-b)]过程
化简【3A方-(A+B)(B-A)】【4(-B-A)(B-A)+5B方】