Find f(a), f(a + h), and the difference quotient f(a + h) − f(a)/h

where

h ≠ 0.

f(x) = 5x3

f(a)=

f(a + h)=

f(a + h) − f(a)/h=

f(a)= 5a^3

f(a + h)=5(a+h)^3

f(a + h) − f(a)/h=5(a+h)^3-5a^3/h

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