Question

4- Dada a função definida por: f(x) = x2 - 5x-10, calcule:
a) f(4)
b) f(-2)​

Answer 1

f(x) = x^2 - 5x-10

f(4) = (4)^2 - 5(4) -10

f(4) = 16 -20 -10

f(4) = 16 -30

f(4) = -14

f(-2)​ = (-2)^2 - 5(-2) -10

f(-2) = 4 +10 -10

f(-2) = 4