# Derivative From First Principles

Calculus Level 2

If $$|f(x_1)-f(x_2)|=(x_1-x_2)^2$$, then find the tangent to $$y=f(x)$$ at $$(2,5)$$.

If the tangent can be represented as $$y=mx+c$$, find the value of $$m+c$$.

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