一、填空题(每题2分,共20分)
1.(-a5)·(-a2)3·(-a3)2=________.
2.(-3xy2)2÷(-2x2y)=________.
3.计算:(-8)2006×(-0.125)2007=__ ______.
4.若xn=5,yn=3,则(xy)2n=________.
5.若A=3x-2,B=1-2x,C=-5x,则A·B+A·C=________.
6.a2-9与a2-3a的公因式是________.
7.(x+1)(x-1)(x2+1)=_________.
8.4x2_________+36y2=(_______)2.
9.若(x-2)2+(y+3)2=0,则(x+y)2=________.