问题
解答题
把下列多项式分解因式
(1)18x3-2xy2;
(2)a(4b2+1)-4ab.
答案
(1)18x3-2xy2,
=2x(9x2-y2),
=2x(3x+y)(3x-y);
(2)a(4b2+1)-4ab,
=a(4b2-4b+1),
=a(2b-1)2.
把下列多项式分解因式
(1)18x3-2xy2;
(2)a(4b2+1)-4ab.
(1)18x3-2xy2,
=2x(9x2-y2),
=2x(3x+y)(3x-y);
(2)a(4b2+1)-4ab,
=a(4b2-4b+1),
=a(2b-1)2.