Noise in a quiet room is 500 times as intense as the threshold of sound. What is the decibel measurement for the quiet room?
2 answers:
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The only thing you can do here is to try to simplify, so I'll assume that's what you want to do.
The numerator is a difference of squares, so it's easy to factorize:
In the denominator, we factorize by grouping:
So we have