004 Sample Final A, Problem 6

Simplify.      ${\frac {1}{3x+6}}-{\frac {x}{x^{2}-4}}+{\frac {3}{x-2}}$

Foundations
How do you simplify ${\frac {1}{x}}+{\frac {1}{x+2}}$ into one fraction?
Answer:
You need to get a common denominator. The common denominator is $x(x+2)$. So,
Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \frac{1}{x}+\frac{1}{x+2}=\frac{x+2}{x(x+2)}+\frac{x}{x(x+2)}=\frac{2x+2}{x(x+2)}} .

Solution:

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Final Answer:

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