因式分解6x³y(x-y)³-4xy³(y-x)²3^2007-5*3^2006+6*3^2005若1/9x²-A=(1/3x+B)(1/3x+4y),那么A=,B.(2a+b)²-(2b+a)²=计算请写过程

Question

因式分解
6x³y(x-y)³-4xy³(y-x)²
3^2007-5*3^2006+6*3^2005
若1/9x²-A=(1/3x+B)(1/3x+4y),那么A=______,B_______.
(2a+b)²-(2b+a)²=_______
计算请写过程

Answer 1

6x³y(x-y)³-4xy³(y-x)² =2xy(x-y)^2(3x^2(x-y)+2y^2)=2xy(x-y)^2(3x^3-3x^2y+2y^2)3^2007-5*3^2006+6*3^2005 =3^2005(3^2-5*3+6)=3^2005(9-15+6)=0若1/9x²-A=(1/3x+B)(1/3x+4y),那么A=__16...