document.write( "Question 937153: 3√ z+4=z-6 \n" ); document.write( "

Algebra.Com's Answer #570585 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"3sqrt%28z%2B4%29=z-6\"$
\n" ); document.write( " $\"9%28z%2B4%29=%28z-6%29%5E2\"$
\n" ); document.write( " $\"9z%2B36=z%5E2-12z%2B36\"$
\n" ); document.write( " $\"z%5E2-21z=0\"$
\n" ); document.write( " $\"z%28z-21%29=0\"$
\n" ); document.write( "Two solutions:
\n" ); document.write( " $\"z=0\"$
\n" ); document.write( "and
\n" ); document.write( " $\"z-21=0\"$
\n" ); document.write( " $\"z=21\"$
\n" ); document.write( "Verify the solutions:
\n" ); document.write( " $\"3sqrt%280%2B4%29=0-6\"$
\n" ); document.write( " $\"3sqrt%284%29=-6\"$
\n" ); document.write( " $\"6=-6\"$
\n" ); document.write( "False, not a real solution.
\n" ); document.write( " $\"3sqrt%2821%2B4%29=21-6\"$
\n" ); document.write( " $\"3sqrt%2825%29=15\"$
\n" ); document.write( " $\"3%2A5=15\"$
\n" ); document.write( " $\"15=15\"$
\n" ); document.write( "True
\n" ); document.write( " $\"highlight%28z=21%29\"$
\n" ); document.write( " \n" ); document.write( "

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