Question

dada F(x)= x elevado a 2 - 3, calcule :
F(-1)=
F(1/2)=
F(-2)=

Answer 1

f(-1): (-1)^2-3
1-3= -2

f(1/2): (1/2)^2-3
1/4-3

f(-2): (-2)^2 -3
4-3= 1