Question

seja o polinomio q(x) 2x³-kx²+3x-2k e considere que(3)=8.qual o valor de k?

Answer 1

Olá,
q(3)=2.(3)³-k.(3)²+3.(3)-2k
q(3)=2.(27)-k.(9)+9-2k
q(3)=54-9k+9-2k
q(3)=63-11k
como q(3)=8
63-11k=8
-11k=8-63
-11k=-55
11k=55
k=55/11
k=5 #