因式分(1)ab2+2ab+a(2)(x2+1)2-4x2.
题型:解答题难度:一般来源:不详
因式分 (1)ab2+2ab+a (2)(x2+1)2-4x2. |
答案
(1)ab2+2ab+a =a(b2+2b+1) =a(b+1)2;
(2)(x2+1)2-4x2 =(x2+1+2x)(x2+1-2x) =(x+1)2(x-1)2. |
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