Question

calcule o valor numérico dos polinômios x/2-2x+5 para x=3​

Answer 1

Resposta:

$\frac{x}{2} - 2x + 5 \\ \\ \frac{3}{2} - 2 \times 3 + 5 \\ \\ \frac{3}{2} - 6 + 5 \\ \\ \frac{3}{2} - 1 \\ \\ \frac{3 - 2}{2} \\ \\ \frac{1}{2}$