(-1/3a^2b^2)^2(-2ab^2)^3÷(1/9a^4b^4)^3 [(x+y)^2-(x+y)(x+y)]÷2y(-1/3a^2b^2)^2(-2ab^2)^3÷(1/9a^4b^4)^3[(x+y)^2-(x+y)(x+y)]÷2y因式分解:x^3y-6x^2y^2+9xy^3(a^2+4b^2)2-16a^2b^2
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(-1/3a^2b^2)^2(-2ab^2)^3÷(1/9a^4b^4)^3 [(x+y)^2-(x+y)(x+y)]÷2y
(-1/3a^2b^2)^2(-2ab^2)^3÷(1/9a^4b^4)^3
[(x+y)^2-(x+y)(x+y)]÷2y
因式分解:
x^3y-6x^2y^2+9xy^3
(a^2+4b^2)2-16a^2b^2
(-1/3a^2b^2)^2(-2ab^2)^3÷(1/9a^4b^4)^3
=1/9a^4b^4×(-8a³b^6)÷(1/729的12次方b的12次方)
=-648/a的5次方b²
[(x+y)^2-(x+y)(x+y)]÷2y
=0÷2y
=0
x^3y-6x^2y^2+9xy^3
=xy(x²-6xy+9y²)
=xy(x-3y)²
(a^2+4b^2)2-16a^2b^2
=(a²+4b²+4ab)(a²+4b²-4ab)
=(a+2b)²(a-2b)²
ab^3+b^2+b-a+1
(a-b)^3+2ab(a-b)
(a^2b-ab-a+1)/(ab^2+3ab-b-3)÷(a^2+a_2)/(b^2+b-6)
1/4a^2b^2{3ab(a+b)-5a(ab-b^2)}=?
(a+b-2ab)(a+b-2)+(1-ab)^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+b/2ab
2AB/A+B
a+b/2ab
ab/a+b=3 a-2ab+b/2a-3ab+2b?
a^2-3ab+b^2/ab=( )/ab-3
a^2-3ab+b^2/ab=( )/ab -3
-3/4ab+2/3a^2b+ab-a^2b-1/2ab-5/3a^2b
a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快
(-3ab)(a^2b-3ab^2+1)
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)