document.write( "Question 878004: what is the domain of the function y = √(x^2+ 7x+12)? \n" ); document.write( "

Algebra.Com's Answer #529654 by Fombitz(32388) $\"\"$ $\"About$

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Domain is the set of x values where the function is defined.
\n" ); document.write( "Square root is undefined when the argument is less than zero.
\n" ); document.write( " $\"x%5E2%2B7x%2B12%3C0\"$
\n" ); document.write( " $\"%28x%2B4%29%28x%2B3%29%3C0\"$
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\n" ); document.write( " $\"graph%28300%2C300%2C-6%2C2%2C-4%2C4%2Cx%5E2%2B7x%2B12%29\"$
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\n" ); document.write( "The function is negative in the range $\"-4%3Cx%3C-3\"$ .
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\n" ); document.write( "This set of $\"x\"$ values is excluded from the domain.
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\n" ); document.write( "Domain: ( $\"-infinity\"$ , $\"-4\"$ )U( $\"-3\"$ , $\"infinity\"$ )
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