因式分解(1)4a2-16(2)(x-2)(x-4)+1(3)x4-8x2y2+16y4
题型:解答题难度:一般来源:不详
因式分解 (1)4a2-16 (2)(x-2)(x-4)+1 (3)x4-8x2y2+16y4 |
答案
(1)4a2-16, =4(a2-4), =4(a+2)(a-2);
(2)(x-2)(x-4)+1, =x2-6x+9, =(x-3)2;
(3)x4-8x2y2+16y4, =(x2-4y2)2, =[(x+2y)(x-2y)]2, =(x+2y)2(x-2y)2. |
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