Question

Evaluate g(n-5) if g(x) = 2 - 6}{2x}" alt="\frac{x^2 - 6}{2x}" align="absmiddle" class="latex-formula">
A$\frac{n^2 - 5}{2n-20}$
B $\frac{n^2-6}{2n} -5$
C $\frac{n^2-10n+19}{2n-10}$
D$\frac{n^2-10n+19}{2n-5}$

Answer 1

The only choice with the correct denominator is

$\bf C.\quad\dfrac{n^2-10n+19}{2n-10}$

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For multiple choice questions, it works well to eliminate answers that cannot possibly be right, then look at what remains. Here, only one answer remains.