问题
填空题
若
|
答案
+M x+1
=N x-1
+M(x-1) (x+1)(x-1)
=N(x+1) (x+1)(x-1)
=(M+N)x+(N-M) x2-1
,1-3x x2-1
∴M+N=-3,N-M=1,
∴M=-2,N=-1,
故答案为-2,-1.
若
|
+M x+1
=N x-1
+M(x-1) (x+1)(x-1)
=N(x+1) (x+1)(x-1)
=(M+N)x+(N-M) x2-1
,1-3x x2-1
∴M+N=-3,N-M=1,
∴M=-2,N=-1,
故答案为-2,-1.