Question

If f(x)=x^2 - 15x , find the following
f(a+h)
(Simplify your answer)

Answer 1

Explanation:

f(x) = x² - 15x

therefore,

f(a + h) = (a + h)² - 15(a + h) = a² + 2ah + h² - 15a - 15h =

= a² - 13a - 15h + 2ah + h² =

= a(a - 13) + h(2a - 15 + h)