Question

Se f(x) =x² +1|5 , então f (2|5) é igual a:
a)3|5
b)9|5
c)9|25
d) 6|25
cálculo também, por favor!!

Answer 1

f (2/5) = (2/5)^2 + (1/5)
f (2/5) = (4/25) + (1/5)
f (2/5) = (4 + 5)/25
f (2/5) = 9/25

Answer 2

f( 2/5)= (2/5)² + 1/5
f(2/5) = 4/25 + 1/5
Tira o mmc de 25 e 5 que é 25
f(2/5) = 4 +5 / 25
f (2/5) = 9/25