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Find the derivative using the product rule.

{sqrt(x+8)}*(x^2+20x)

(x+8)^1/2(2x+20) minus (1/2)(x+8)^-1/2(x^2+20x)

I'm not feeling confident I am on the right track and I have a quiz tomorrow over this.

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Change minus to plus and then it's all good.

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