document.write( "Question 706870: for the following expression, what are the restrictions for a? 2a^2+a-15 over 5 a^2+16a+3 (1 point)
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Algebra.Com's Answer #435710 by KMST(5328) $\"\"$ $\"About$

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The rational expression $\"%282a%5E2%2Ba-15%29%2F%285+a%5E2%2B16a%2B3%29\"$ does not exist when
\n" ); document.write( " $\"5+a%5E2%2B16a%2B3=0\"$ which happens for $\"a=-1%2F5\"$ and for $\"a=-3\"$
\n" ); document.write( "(You can find that by factoring $\"5+a%5E2%2B16a%2B3=%285a%2B1%29%28a%2B3%29\"$ , or by solving $\"5+a%5E2%2B16a%2B3=0\"$ using the quadratic formula).
\n" ); document.write( "Those are the only restrictions on the variable $\"a\"$ .
\n" ); document.write( "For any value of $\"a\"$ other than $\"-1%2F5\"$ and $\"-3\"$ the expression is defined. \n" ); document.write( "

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