问题
选择题
一次数学课上,老师出了下面一道因式分解的题目:x4-1,请问正确的结果为( )
A.(x2-1)(x2+1)
B.(x+1)2(x-1)2
C.(x-1)(x+1)(x2+1)
D.(x-1)(x+1)3
答案
x4-1=(x2+1)(x2-1)=(x2+1)(x-1)(x+1),
故选:C.
一次数学课上,老师出了下面一道因式分解的题目:x4-1,请问正确的结果为( )
A.(x2-1)(x2+1)
B.(x+1)2(x-1)2
C.(x-1)(x+1)(x2+1)
D.(x-1)(x+1)3
x4-1=(x2+1)(x2-1)=(x2+1)(x-1)(x+1),
故选:C.