document.write( "Question 57391: x^2+(x+21)^2=(x+24)^2 \n" ); document.write( "

Algebra.Com's Answer #39133 by Nate(3500) $\"\"$ $\"About$

You can put this solution on YOUR website!
x^2 + x^2 + 42x + 441 = x^2 + 48x + 576
\n" ); document.write( "x^2 - 6x - 135 = 0
\n" ); document.write( "x^2 - 6x = 135
\n" ); document.write( "(x - 3)^2 = 144
\n" ); document.write( "x - 3 = +- 12
\n" ); document.write( "x = 3 +- 12
\n" ); document.write( "x = 15 and x = -9 \n" ); document.write( "

\n" );