3(a^3-a^2b+1 ab^2)+1 (a^3+4a^2b+3ab^2)=?打错了是这道题3(a^3-a^2b+1 ab^2)+1\2 (a^3+4a^2b+3ab^2)=?
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3(a^3-a^2b+1ab^2)+1(a^3+4a^2b+3ab^2)=?打错了是这道题3(a^3-a^2b+1ab^2)+1\2(a^3+4a^2b+3ab^2)=?3(a^3-a^2b+1ab^
3(a^3-a^2b+1 ab^2)+1 (a^3+4a^2b+3ab^2)=?打错了是这道题3(a^3-a^2b+1 ab^2)+1\2 (a^3+4a^2b+3ab^2)=?
3(a^3-a^2b+1 ab^2)+1 (a^3+4a^2b+3ab^2)=?
打错了是这道题3(a^3-a^2b+1 ab^2)+1\2 (a^3+4a^2b+3ab^2)=?
3(a^3-a^2b+1 ab^2)+1 (a^3+4a^2b+3ab^2)=?打错了是这道题3(a^3-a^2b+1 ab^2)+1\2 (a^3+4a^2b+3ab^2)=?
3(a^3-a^2b+1 ab^2)+1/2 (a^3+4a^2b+3ab^2)
=3a^3-3a^2b+3ab^2+1/2a^3+2a^2b+3/2ab^2
=3.5a^3-a^2b+4.5ab^2
=a(3.5a^2-ab+4.5b^2)
4a^3+a^2b+6ab^2
ab^3+b^2+b-a+1
1/4a^2b^2{3ab(a+b)-5a(ab-b^2)}=?
1/a+1/b=3则a-ab+b/a+2ab+b值是?
如果a+b=3,ab=-1,那么(a+b)2-a-b+ab=?
(a^2b-ab-a+1)/(ab^2+3ab-b-3)÷(a^2+a_2)/(b^2+b-6)
已知a+b=A,ab=A+2008,1-2（a+ab）+（ab-2b）=3A.求a+b和ab的值
已知a+b=A ab=A+2008 1-2(a+ab)+(ab-2b)=3A 求a+b ab的值
已知a+b=A ab=A+2008 1-2(a+ab)+(ab-2b)=3A 求a+b ab的值
a*b=a+b-2ab (3*2)*1
{ab-[3a²b-(4a²b+1/2ab)]-4a²b}+3a²b
已知a,b满足a+b=5,a-b=1,求ab,a^2+b^2-3ab
计算(a^3-4a^2b-a+4ab^2)/a(a-2b+1)
(a-b/ab)^2•(b-a/-a)^-3÷1/(a^2-b^2)
-3/4ab+2/3a^2b+ab-a^2b-1/2ab-5/3a^2b
当a-b等于-1,ab等于-2,（2a-3b-ab)-(a-2b+3ab)等于多少
当a-b=-1,ab=-2,(2a-3b-ab)-(a-2b+3ab)
A-B=-1,AB=-2,则(2A-3B-AB)-(A-2B+3AB)=?”
若a-b等于4,ab等于1,求（-2ab+2a+3a)-(3ab+2b-2a)-(a+4b+ab)的值