分解因式:(1)8a-4a2-4;(2)(x2-5)2+8(5-x2)+16

分解因式:(1)8a-4a2-4;(2)(x2-5)2+8(5-x2)+16.
2025-05-19 22:03:09
推荐回答(1个)
回答(1):

(1)8a-4a2-4
=-4(a2-2a+1)
=-4(a-1)2

(2)(x2-5)2+8(5-x2)+16
=(x2-5)2-8(x2-5)+16
=(x2-5-4)2
=(x+3)2(x-3)2