分解因式:2m^3 - 8m(x+2)(x+4)+ x^2 -44(x-y)^2 - 2(y-x)^3x^2 (y^2 - 1)+2x(y^2 - 1)+(y^2 - 1)a(x-y)-b(y-x)+c(x-y)3 x^3 y - 6xy + 3yx^3 + 6x^2 - 27b^2 - 2ba^3-ab^2x^3-6x^2+9x(2a-b)^2 + 8ab(x+2)(x+3)+ x^2 + 4xy-x-y+1a^2 - b^2 + 4ba^2 - 2ab + b^2 -1计算:[1-1/(2^2)][1-1/(3^2)]...[1-1/(9^2)][1-1/(10^2)]2010^2 - 2009^2 + 2008^2 - 2007^2 +...+ 2^2 - 1^227^2-46*27+ 23^2若a^2 + b^2 + 2a-4b+5=0,求实数a,b的值.若非零实数a,b满足 4a^2 + b^2 =4ab,则b/a=
问题描述:
分解因式:
2m^3 - 8m
(x+2)(x+4)+ x^2 -4
4(x-y)^2 - 2(y-x)^3
x^2 (y^2 - 1)+2x(y^2 - 1)+(y^2 - 1)
a(x-y)-b(y-x)+c(x-y)
3 x^3 y - 6xy + 3y
x^3 + 6x^2 - 27
b^2 - 2b
a^3-ab^2
x^3-6x^2+9x
(2a-b)^2 + 8ab
(x+2)(x+3)+ x^2 + 4
xy-x-y+1
a^2 - b^2 + 4b
a^2 - 2ab + b^2 -1
计算:
[1-1/(2^2)][1-1/(3^2)]...[1-1/(9^2)][1-1/(10^2)]
2010^2 - 2009^2 + 2008^2 - 2007^2 +...+ 2^2 - 1^2
27^2-46*27+ 23^2
若a^2 + b^2 + 2a-4b+5=0,求实数a,b的值.
若非零实数a,b满足 4a^2 + b^2 =4ab,则b/a=
答