问题
解答题
将下列各式分解因式:
(1)x2y2+6xy+9
(2)2x3-18x.
答案
(1)x2y2+6xy+9=(xy+3)2;
(2)2x3-18x,
=2x(x2-9),
=2x(x+3)(x-3).
将下列各式分解因式:
(1)x2y2+6xy+9
(2)2x3-18x.
(1)x2y2+6xy+9=(xy+3)2;
(2)2x3-18x,
=2x(x2-9),
=2x(x+3)(x-3).