问题 解答题

分解因式:

(1)4x2y2+12x3y5-8x4y3

(2)(x+y)2-4y2

(3)a3-10a2+25a;

(4)-x5y3+x3y5

答案

(1)4x2y2+12x3y5-8x4y3=4x2y2(1+3xy3-2x2y);

(2)(x+y)2-4y2

=(x+y+2y)(x+y-2y)

=(x+3y)(x-y);

(3)a3-10a2+25a

=a(a2-10a+25)

=a(a+5)2

(4)-x5y3+x3y5

=-x3y3(x2-y2

=-x3y3(x+y)(x-y).

多项选择题
单项选择题 A1型题