document.write( "Question 1131443: Solve For X:
\n" );
document.write( "\sqrt(5-x)=x+1 \n" );
document.write( "
Algebra.Com's Answer #748104 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Solve For X: \n" ); document.write( " \n" ); document.write( "square both sides \n" ); document.write( " \n" ); document.write( "FOIL (x+1)(x+1) \n" ); document.write( "5 - x = x^2 + 2x + 1 \n" ); document.write( "0 = x^2 + 2x + x + 1 - 5 \n" ); document.write( "A quadratic equation \n" ); document.write( "x^2 + 3x - 4 = 0 \n" ); document.write( "Factors to \n" ); document.write( "(x+4)(x-1) = 0 \n" ); document.write( "two solutions \n" ); document.write( "x = -4, we don't want the square root of a negative number \n" ); document.write( "therefore \n" ); document.write( "x = 1 is the only solution \n" ); document.write( " |