Question

Considere P(x)=2x³=kx²+3x-2k,para que valores de k tem-se p (2)=4

Answer 1

P(2) = 2.2³=k.2³+3.2-2k
P(2) = 2.8=8k+6-2k
P(2) = 16 = 8k-2k+6
--> 16-6 = 6k
6k = 10
k = 10/6
k = 5/3