Question

Calcule p (x)= -x+3-1 para x=2

Answer 1

Só substitui. Onde tiver x coloque 2:

$P(x)=-x+2 \\\\ P(2) = -2+2 \\\\ \boxed{\boxed{P(2) = 0}}$

Answer 2

$p(x)=-x+3-1 \\ p(x)=-x+2 \\ \\ x=2 \\ \\ p(x)=-x+2 \\ p(x)=-2+2 \\ \boxed {p(x)=0}$