Question

Dada a função f(x) = 2x - 3, e g(x) = x² + 2x - 5 o valor de f(1) + g(-2) é:

Answer 1

$f(x) =2x-3\\\\f(1) = 2-3\\\\f(1) = -1\\\\\\g(x) = x^2+2x-5\\\\g(-2) = (-2)^2 -4-5\\ \\g(-2) = 4-4-5\\\\g(-2) = -5\\\\\\f(1)+g(-2)\\\\-1-5\\\\-6$

Answer 2

Resposta:

f(x) = 2x - 3

f(1) = 2 . 1 - 3= -1

g(x) = x² + 2x - 5

g(-2) = -2² + 2 . (-2) - 5

g(-2) = 4 - 9 = -5

f(1) + g(-2)=

-1 - 5 = -6