document.write( "Question 24680: I AM SUPOSED TO USE i for this but the teacher did not explain how
\n" ); document.write( "x^2=-16
\n" ); document.write( "8x^2=-2
\n" ); document.write( "x^2=-30
\n" ); document.write( "please help
\n" ); document.write( "thank you for your time \n" ); document.write( "

Algebra.Com's Answer #13179 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"i+=+sqrt%28-1%29\"$
\n" ); document.write( " $\"x%5E2+=+-16\"$
\n" ); document.write( "take the square root of both sides
\n" ); document.write( " $\"x+=+sqrt%28-16%29\"$
\n" ); document.write( "note that $\"sqrt%28-16%29+=+sqrt%28-1+%2A+16%29\"$
\n" ); document.write( "and that equals $\"sqrt%28-1%29+%2A+sqrt%2816%29\"$
\n" ); document.write( "so
\n" ); document.write( " $\"x+=+i+%2A+sqrt%2816%29\"$
\n" ); document.write( " $\"x+=+%2B-+%28i+%2A+4%29\"$
\n" ); document.write( "next problem:
\n" ); document.write( " $\"8%2A+x%5E2+=+-2\"$
\n" ); document.write( " $\"x%5E2+=+-%281%2F4%29\"$
\n" ); document.write( " $\"x+=+sqrt%28+-1%29+%2A+sqrt%281%2F4%29\"$
\n" ); document.write( " $\"x+=+%2B-+%28i+%2A+%281%2F2%29%29\"$
\n" ); document.write( "next problem:
\n" ); document.write( " $\"x%5E2+=+-30\"$
\n" ); document.write( " $\"x+=+sqrt%28-30%29\"$
\n" ); document.write( " $\"x+=+sqrt%28-1%29+%2A+sqrt%2830%29\"$
\n" ); document.write( " $\"x+=+%2B-+%28i+%2A+5.5%29\"$
\n" ); document.write( " \n" ); document.write( "

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