问题
解答题
分解因式:
(1)9-x2
(2)m2-10m+25
(3)3a3-6a2+3a
(4)x4-2x2+1.
答案
(1)原式=(3+x)(3-x);
(2)原式=(m-5)2;
(3)原式=3a(a2-2a+1),
=3a(a-1)2;
(4)原式=(x2-1)2,
=(x+1)2(x-1)2.
分解因式:
(1)9-x2
(2)m2-10m+25
(3)3a3-6a2+3a
(4)x4-2x2+1.
(1)原式=(3+x)(3-x);
(2)原式=(m-5)2;
(3)原式=3a(a2-2a+1),
=3a(a-1)2;
(4)原式=(x2-1)2,
=(x+1)2(x-1)2.