Respuesta :

Answer:

Step-by-step explanation:

a. (-4x^2-7) - (-4a^2-7) / x-a

b. (-4(x-h)^2-7) - (-4x^2-7) / h

since there are no numbers to plug in for the variables (a, h, x) there is no possible numerical value for the equations. The format of the equations seems familiar in the sense of limits for calculus, but I could be wrong.