SOLUTION: For the given function, find f(x+h)-f(x)/h. The equation is 5x^2+7. I have tried substituting x for the equation such as, (5x^2+7+h)-(5x^2+7)/h and then I am not sure what to d

Algebra ->  Functions -> SOLUTION: For the given function, find f(x+h)-f(x)/h. The equation is 5x^2+7. I have tried substituting x for the equation such as, (5x^2+7+h)-(5x^2+7)/h and then I am not sure what to d      Log On


   

Question 1021463: For the given function, find f(x+h)-f(x)/h. The equation is 5x^2+7.
I have tried substituting x for the equation such as, (5x^2+7+h)-(5x^2+7)/h and then I am not sure what to do next.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Your f(x+h) is incorrect.
5%28x%2Bh%29%5E2%2B7=5%28x%5E2%2B2xh%2Bh%5E2%29%2B7=5x%5E2%2B10xh%2B5h%5E2%2B7
Now continue,
f%28x%2Bh%29-f%28x%29=5x%5E2%2B10xh%2B5h%5E2%2B7-5x%5E2-7