document.write( "Question 1093033: Solve for x.
\n" ); document.write( "sqrt{x^2-x-2} = sqrt{x^2+x+7} -1\r
\n" ); document.write( "\n" ); document.write( "I tried it and i got -5 but the calculator and my teacher said that the answer is supposed to be -2.
\n" ); document.write( "

Algebra.Com's Answer #707648 by MathTherapy(10552)\"\" \"About 
You can put this solution on YOUR website!
Solve for x.
\n" ); document.write( "sqrt{x^2-x-2} = sqrt{x^2+x+7} -1\r
\n" ); document.write( "\n" ); document.write( "I tried it and i got -5 but the calculator and my teacher said that the answer is supposed to be -2.
\n" ); document.write( "
\"sqrt%28x%5E2+-+x+-+2%29+=+sqrt%28x%5E2+%2B+x+%2B+7%29+-+1\"\r\n" );
document.write( "\"%28sqrt%28x%5E2+-+x+-+2%29%29%5E2+=+%28sqrt%28x%5E2+%2B+x+%2B+7%29+-+1%29%5E2\" ------- Squaring each side\r\n" );
document.write( "\"x%5E2+-+x+-+2+=+x%5E2+%2B+x+%2B+7+-+2sqrt%28x%5E2+%2B+x+%2B+7%29+%2B+1\"\r\n" );
document.write( "\"x%5E2+-+x+-+2+=+x%5E2+%2B+x+%2B+8+-+2sqrt%28x%5E2+%2B+x+%2B+7%29\"\r\n" );
document.write( "\"2sqrt%28x%5E2+%2B+x+%2B+7%29+=+x%5E2+%2B+x+%2B+8+-+x%5E2+%2B+x+%2B+2\"\r\n" );
document.write( "\"2sqrt%28x%5E2+%2B+x+%2B+7%29+=+2x+%2B+10\"\r\n" );
document.write( "\"4%28x%5E2+%2B+x+%2B+7%29+=+4x%5E2+%2B+40x+%2B+100\" ------ Squaring each side\r\n" );
document.write( "\"4%28x%5E2+%2B+x+%2B+7%29+=+4%28x%5E2+%2B+10x+%2B+25%29\"\r\n" );
document.write( "\"x%5E2+%2B+x+%2B+7+=+x%5E2+%2B+10x+%2B+25\"\r\n" );
document.write( "\"x%5E2+-+x%5E2+%2B+x+-+10x+=+25+-+7\"\r\n" );
document.write( "- 9x = 18\r\n" );
document.write( "\"highlight_green%28matrix%281%2C5%2C+x%2C+%22=%22%2C+18%2F%28-+9%29%2C+%22=%22%2C+-+2%29%29\"
\n" ); document.write( "
\n" );