Jawabanmu

2014-07-12T00:12:21+07:00
X=1
> 2x4 - 4x2 + nx + 3 = 0
> 2(1) - 4(1) + n(1) + 3 = 0
> 2 - 4 + n + 3 = 0
> -2 + n+ 3 = 0
> n + 1 = 0
> n = -1
2014-07-12T00:29:51+07:00
X = 1
f(x) = 2x⁴ - 4x² + nx + 3
f(1) = 2(1)⁴ - 4(1)² + n(1) + 3
   0  = 2 - 4 + n + 3
   0  = 1 + n
   n  = -1