PLEASE I NEED HELP URGENT I Will MARKE YOU BRAIN LIST​

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

It is given that the quadratic equation hx²-3x+k=0, where h and k are constants, has roots [tex] \beta \: and \: 2 \beta [/tex]express h in terms of k

Consider the input and output values for f(x) = 2x - 3 and g(x) = 2x + 7. what is a reasonable explanation for different rules with different input values producing the same sequence?