Question

Seja P (x)= 2x² + x -1. Então P (2/3) vale:

A) 7/3

B) 5/9

C) 13/9

D) 14/11

E )7/9

Answer 1

$P(\frac{2}{3})=2*(\frac{2}{3})^2+\frac{2}{3}-1=\frac{8}{3}+\frac{2}{3}-1=\frac{7}{3}$