Is x = 0 a valid potential solution to the equation log(x + 7) + log(x − 3) = 17?

asked Mar 10, 2022 116k views

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3 votes

Plug x = 0 to check

$\log(x+7) + \log(x-3)\\\\=\log(0+7) + \log(0-3)\\\\=\log 7 + \log (-3)\\\\$

You cant take log of negative number or 0 so x = 0 is not a solution.

DeadAlready answered Mar 16, 2022

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