Question

SI P(x) = 8x³ + 2x² -x +3/2

calcular: P(1/2)

Answer 1

$p(x) = 8 {x}^{3} + 2 {x}^{2} - x + \frac{3}{2} \\ p( \frac{1}{2} ) = 8( { \frac{1}{2} )}^{3} + 2( { \frac{1}{2} )}^{2} - (\frac{1}{2} ) + \frac{3}{2} \\ p( \frac{1}{2} ) = 1 + \frac{1}{2} - \frac{1}{2} + \frac{3}{2} \\ p( \frac{1}{2} ) = \frac{5}{2}$