问题
填空题
因式分(1)x5-x=______;(2)4(a+b)2-16ab=______.
答案
(1)x5-x=x(x2+1)(x2-1)=x(x2+1)(x+1)(x-1);
(2)4(a+b)2-16ab=4(a2+2ab+b2-4ab)=4(a2-2ab+b2)=4(a-b)2.
故答案为:(1)x(x2+1)(x+1)(x-1),(2)4(a-b)2.
因式分(1)x5-x=______;(2)4(a+b)2-16ab=______.
(1)x5-x=x(x2+1)(x2-1)=x(x2+1)(x+1)(x-1);
(2)4(a+b)2-16ab=4(a2+2ab+b2-4ab)=4(a2-2ab+b2)=4(a-b)2.
故答案为:(1)x(x2+1)(x+1)(x-1),(2)4(a-b)2.