Find the gradient of the curve [tex]y=\frac{5x-4}{x^2}[/tex] at the point where the curve crosses the x-axis.(adsbygoogle = window.adsbygoogle || []).push({});

After I differentiating the equation, I got [tex]-\frac{5}{x^2} + \frac{8}{x^3}[/tex] (it might be wrong). Now what do I do?

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# Homework Help: Find the gradient of the curve

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