document.write( "Question 448756: Please help me solve this equation: $\"+x%5E2=+sqrt%28x%2B20%29+\"$ \n" ); document.write( "

Algebra.Com's Answer #308775 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"+x%5E2=+sqrt%28x%2B20%29+\"$
\n" ); document.write( "square both sides
\n" ); document.write( " $\"+%28x%5E2%29%5E2+=+%28sqrt%28x%2B20%29%29%5E2+\"$
\n" ); document.write( " $\"x%5E4+=+x+%2B+20\"$
\n" ); document.write( " $\"x%5E4+-+x+-+20\"$ = 0
\n" ); document.write( ":
\n" ); document.write( "Solve this equation on a graphing calc
\n" ); document.write( " $\"+graph%28+300%2C+200%2C+-4%2C+4%2C+-25%2C+10%2C+x%5E4-x-20%29+\"$
\n" ); document.write( "Two solutions
\n" ); document.write( "x=+2.17
\n" ); document.write( "x=-2.058
\n" ); document.write( ":
\n" ); document.write( "You can check both solutions in the original problem
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