3(a^3-a^2b+1/2ab^2)-1/2(6a^3+4a^2b+3ab^2)
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3(a^3-a^2b+1/2ab^2)-1/2(6a^3+4a^2b+3ab^2)3(a^3-a^2b+1/2ab^2)-1/2(6a^3+4a^2b+3ab^2)3(a^3-a^2b+1/2ab^2
3(a^3-a^2b+1/2ab^2)-1/2(6a^3+4a^2b+3ab^2)
3(a^3-a^2b+1/2ab^2)-1/2(6a^3+4a^2b+3ab^2)
3(a^3-a^2b+1/2ab^2)-1/2(6a^3+4a^2b+3ab^2)
3(a^3-a^2b+1/2ab^2)-1/2(6a^3+4a^2b+3ab^2)
=3a^3-3a^2b+3/2ab^2-3a^3-2a^b-3/2ab^2
=-5a^2b
3(a^3-a^2b+1/2ab^2)-1/2(6a^3+4a^2b+3ab^2)
=3a³-6a²b+1.5ab²-3a³-2a²b-1.5ab²
=0
(a-b)^3+2ab(a-b)
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
ab/a+b=3 a-2ab+b/2a-3ab+2b?
a*b=a+b-2ab (3*2)*1
3(-ab+2a)-(3a-b)
3(-ab+2a)-(3a-b)
计算(a^3-4a^2b-a+4ab^2)/a(a-2b+1)
已知a,b满足a+b=5,a-b=1,求ab,a^2+b^2-3ab
{ab-[3a²b-(4a²b+1/2ab)]-4a²b}+3a²b
(a-b/ab)^2•(b-a/-a)^-3÷1/(a^2-b^2)
(ab(a^-2ab)-a^2b(a-3b))÷（3a^b）