Question

dadas as funções f(x) = 4x + 3 e g(x) = x² + a. Sabendo que f(2) - g(1) = 3 , calcule o valor de a

Answer 1

f(2)=4.2+3
f(2)=8+3
f(2)=11

g(1)=1²+a
g(1)=1+a

f(2)-g(1)=3
11-(1+a)=3
11-1-a=3
10-3=a
a=7