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Using the rules of differentiation, determine  the derivative  of $ f(x)=\frac{x^2+9x+18}{x+3}$
in Mathematics by Platinum (138,124 points) | 408 views

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(x+3)(x+6)/x+3 = x+6  factorize numerator then divide by common factor

then differentiate, 1x^(1-1) + 0

                       =1
by Diamond (53,024 points)
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f ' (x) = d/dx (x2 +9x +18 / x +3) = d/dx [ (x +6)(x +3) / x +3) = d/dx (x+6) = 1
by Wooden Status (1,030 points)

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