jika f(×) = ×^5 + m×^4 - 2×^3 + × + 1 dan f(2) = 3 maka nilai f(-2)=....

jawab

fungsi

f(x)  = x⁵ + m x⁴ - 2 x³ + x + 1
f(2) = 3
2⁵ + m. 2⁴ - 2. 2³ + 2 + 1 = 3
32  + 16 m - 16 + 3 = 3
16m  +16= 0
m= - 1

f(x) = x⁵ - x⁴ - 2 x³+ x + 1
f(-2) = (-2)⁵- (-2)⁴ - 2(-2)³  -2 + 1
f(-2) = -32  - 16 + 16 - 2 + 1
f(-2) = -33