Diketahuif(x)=2x^4-mx^3-4x+6 , jika f(4)=54,maka m??

Kelas 11 Matematika
Bab Suku Banyak

f(x) = 2x⁴ - mx³ - 4x + 6

f(4) = 54
2 . 4⁴ - m . 4³ - 4 . 4 + 6 = 54
2 . 256 - m . 64 - 16 + 6 = 54
-64 m = 54 - 502
m = -448/-64
m = 7