Question

dada a função f(x)= x2+3 determine f(8)+f(3)

Answer 1

f(x) = x2 + 3 

f(8) = 8.2 + 3
f(8) = 19

f(3) = 3.2 + 3
f(3) = 9

f(8) + f(3)
19 + 9 = 28

Answer 2

f(8)= 8.2+3
f(8)=16+3
f(8)=19
f(3)=3.2+3
f(3)=6+3
f(3)=9
f(8)+f(3)=19+9=28