document.write( "Question 973070: why is the domain of square root of x^2 + x equal to x>=0 or x<= -1? \n" ); document.write( "

Algebra.Com's Answer #595327 by josgarithmetic(39620) $\"\"$ $\"About$

You can put this solution on YOUR website!
Why?
\n" ); document.write( "Why!\r
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\n" ); document.write( "\n" ); document.write( "Try using some value for x outside of the stated domain, like let $\"x=-1%2F2\"$ .\r
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\n" ); document.write( "\n" ); document.write( " $\"sqrt%28%28-1%2F2%29%5E2-1%2F2%29\"$
\n" ); document.write( " $\"sqrt%281%2F4-1%2F2%29\"$
\n" ); document.write( " $\"sqrt%28-1%2F4%29\"$ , not a \"real\" number, but is imaginary.\r
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\n" ); document.write( "\n" ); document.write( "Do you want to allow for imaginary numbers or only real numbers? \n" ); document.write( "

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