Question

3-x^2,quando x=3
me ajudem​

Answer 1

f(x)=3-x^2
f(3)=3-3^2
f(3)=3-9=-6

Answer 2

Oie, tudo bom?

Para x = 3.

$= 3 - x {}^{2} \\ = 3 - 3{}^{2} \\ = 3 - 9 \\ \boxed{ = - 6}$

Att. NLE Top Shotta