Question 164126
{{{(R^2 - 5R + 6)/(R^2 -4)}}}
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Notice that you can factor the numerator:
{{{((R-3)(R-2))/(R^2 -4)}}}
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Similarly, you can factor the denominator:
{{{((R-3)(R-2))/((R-2)(R+2))}}}
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Now, you can cancel like-terms:
{{{(R-3)/(R+2)}}}