Question

Dado o polinômio p(x)= x⁴-2x²+5x+1, calcule:
A) (-1/2)

Answer 1

Resposta:

-15/16

${(-\frac{ 1}{2} )}^{4}- 2 {( - \frac{1}{2} )}^{2}+ 5 \times - \frac{1}{2}+1$

$\frac{1}{16} + 2 \times \frac{1}{4} - \frac{5}{2} + 1$

$\frac{1}{16} + \frac{1}{2} - \frac{5}{2} + 1 = \frac{1 + 8 - 40 + 16}{16}$

$\frac{25 - 40}{16} = \frac{ - 15}{16}$