document.write( "Question 368351: Please help me solve this problem.\r
\n" ); document.write( "\n" ); document.write( "c/d +2
\n" ); document.write( "_________
\n" ); document.write( "c^2/d^2 -4 \n" ); document.write( "

Algebra.Com's Answer #262500 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Substitute, let $\"u=c%2Fd\"$ , $\"u%5E2=c%5E2%2Fd%5E2\"$
\n" ); document.write( " $\"%28c%2Fd%2B2%29%2F%28%28c%2Fd%29%5E2-4%29=%28u%2B2%29%2F%28u%5E2-4%29\"$
\n" ); document.write( " $\"%28c%2Fd%2B2%29%2F%28%28c%2Fd%29%5E2-4%29=%28u%2B2%29%2F%28%28u%2B2%29%28u-2%29%29\"$
\n" ); document.write( " $\"%28c%2Fd%2B2%29%2F%28%28c%2Fd%29%5E2-4%29=1%2F%28u-2%29\"$
\n" ); document.write( " $\"%28c%2Fd%2B2%29%2F%28%28c%2Fd%29%5E2-4%29=1%2F%28c%2Fd-2%29\"$
\n" ); document.write( " $\"%28c%2Fd%2B2%29%2F%28%28c%2Fd%29%5E2-4%29=highlight%28d%2F%28c-2d%29%29\"$
\n" ); document.write( " \n" ); document.write( "

\n" );