Question 346271
Just replace x with each given value and solve individually.


I will solve g(a + h) only and you can do the rest.


Let g be the function defined by the equation below 


g(x) = -x^2+6x 


Let x = (a + h).


g(a + h) = -(a + h)^2 + 6(a + h)


g(a + h) = -(a^2 + 2ah + h^2) + 6a + 6h


g(a + h) = -a^2 - 2ah - h^2 + 6a + 6h


Now, you can do the rest.