+69 15)
\(\frac{\frac{n-4}{n^2-2n-15}}{\frac{n+1}{n+3}}\)
Simplify the polynomial.
\(\frac{\frac{n-4}{(n-5)(n+3)}}{\frac{n+1}{n+3}}\)
Multiply the top and the bottom fraction by the common equation, which is \((n-5)(n+3)\) .
\(\frac{n-4}{(n-5)(n+1)}\)
Choice 3
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16)
Take all the bottom numbers and make them equal to 0.
\(a^2-16=0, a-4=0, a+4=0\)
\(a^2=16, a=4, a=-4\)
\(a=4, a=4, a=-4\)
So that means \(a\) can NOT be 4 or -4.
Choose the option without those 2 numbers.
Choice 4.
