(1) Find the derivative of f(x) = x² + 2x using first principles as follows: ● Find f(x + h). • Calculate f(x + h) − f (x) and simplify it. • Simplify f(x+h)-f(x) • Now take the limit as h approaches zero, that is, limħ→ f(x+h)-f(x)¸

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A: Both question are solved as, follow

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