问题
解答题
分解因式:
(1)x3-25x
(2)3ax2+6axy+3ay2.
答案
(1)x3-25x,
=x(x2-25),
=x(x+5)(x-5);
(2)3ax2+6axy+3ay2,
=3a(x2+2xy+y2),
=3a(x+y)2.
分解因式:
(1)x3-25x
(2)3ax2+6axy+3ay2.
(1)x3-25x,
=x(x2-25),
=x(x+5)(x-5);
(2)3ax2+6axy+3ay2,
=3a(x2+2xy+y2),
=3a(x+y)2.