adelina136 adelina136

11-12-2016
Mathematics

contestada

Write into a single logarithm log b (X+1)+ log b (X-8)

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1davey29 1davey29

12-12-2016

To solve, use properties of logs, specifically log(u)+log(v)=log(uv). This makes your equation logb(x+1)+logb(x-8)=logb((x+1)(x-8)), which can be made into logb(x^2-7x-8) by expanding the factored form.

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