题目将a4−2a2+1a^{4}-2a^{2}+1a4−2a2+1分解因式,所得结果正确的是（ ）A.a2(a2−2)+1a^{2}(a^{2}-2)+1a2(a2−2)+1B.(a2−2)(a2+1)(a^{2}-2)(a^{2}+1)(a2−2)(a2+1)C.(a2−1)2(a^{2}-1)^{2}(a2−1)2D.(a−1)2(a+1)2(a-1)^{2}(a+1)^{2}(a−1)2(a+1)2知识点：提公因式法和公式法的综合运用章节：数与式 / 因式分解
