Find and simplify the difference quotient f(x+h)−f(x)/h​, h≠0 for the given function. f(x)=7x2   f(x+h)−f(x)/h=? The Answer is 14x+7h. But how?

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Chapter2: Functions And Graphs
Section2.CT: Chapter Test
Problem 5CT: Find the difference quotient. f(x)=x2x+5
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Find and simplify the difference quotient
f(x+h)−f(x)/h​,
h≠0
for the given function.
f(x)=7x2
 
f(x+h)−f(x)/h=?
The Answer is 14x+7h. But how?
 
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