document.write( "Question 795475: What is the x-intercept of y=square root x^2+9?\r
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document.write( "I squared both sides and ended up with 0=x^2+9
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document.write( "subtracted 9 from both sides .... -9=x^2\r
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document.write( "Since a negative doesn't go under a radical, do I divide by -1? And if I divide by -1 what do I do with -x^2? \n" );
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Algebra.Com's Answer #480992 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! What is the x-intercept of y=square root x^2+9? \n" ); document.write( "------ \n" ); document.write( "Let y = 0 \n" ); document.write( "Then sqrt(x^2+9) = 0 \n" ); document.write( "Then x^2+9 = 0 \n" ); document.write( "x^2 = -9 \n" ); document.write( "x = +-3i \n" ); document.write( "----- \n" ); document.write( "There is no x-intercept. \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "=============== \n" ); document.write( " |