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Understanding Rational Expressions Practice Test
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Q1
Find the values of 
which will make the given rational expression undefined:
$\frac{x+5}{\left( x-1 \right)\left( x+2 \right)}$
Find the values of
$\frac{x+5}{\left( x-1 \right)\left( x+2 \right)}$
varies directly as 
, and 
when 
, find 
when 
.