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{:[g(x)=sqrt(2x+5)],[n(x)=(5x-1)/(x+2)]:}

n(g(x))=?

g(x)=2x+5n(x)=5x1x+2 \begin{array}{r}g(x)=\sqrt{2 x+5} \\ n(x)=\frac{5 x-1}{x+2}\end{array} \newlinen(g(x))=? n(g(x))=?

Full solution

Q. g(x)=2x+5n(x)=5x1x+2 \begin{array}{r}g(x)=\sqrt{2 x+5} \\ n(x)=\frac{5 x-1}{x+2}\end{array} \newlinen(g(x))=? n(g(x))=?
  1. Substitute Functions: To find the composition of the functions n(x)n(x) and g(x)g(x), denoted as n(g(x))n(g(x)), we need to substitute the function g(x)g(x) into the function n(x)n(x) wherever there is an xx in n(x)n(x).
  2. Write Functions: First, let's write down the functions again for clarity:\newlineg(x)=2x+5g(x) = \sqrt{2x + 5}\newlinen(x)=5x1x+2n(x) = \frac{5x - 1}{x + 2}
  3. Substitute g(x)g(x): Now, we substitute g(x)g(x) into n(x)n(x). This means every xx in n(x)n(x) will be replaced with 2x+5\sqrt{2x + 5}:n(g(x))=52x+512x+5+2n(g(x)) = \frac{5 \cdot \sqrt{2x + 5} - 1}{\sqrt{2x + 5} + 2}
  4. Final Composition: We have successfully found the composition of the functions n(x)n(x) and g(x)g(x). There is no further simplification that can be done without specific values for xx.

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