document.write( "Question 1139518: The interval PQ has length p and the point A lies between the points P and Q. Find PA when PQ x QA = PA^2 \n" ); document.write( "
Algebra.Com's Answer #759989 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "Given: PQ = p.

\n" ); document.write( "Let PA = x.

\n" ); document.write( "Then QA = p-x.

\n" ); document.write( "\"PQ%2AQA+=+%28PA%29%5E2\"
\n" ); document.write( "\"p%28p-x%29+=+x%5E2\"

\n" ); document.write( "This is a quadratic equation with variables instead of constants for coefficients. Use the quadratic formula to get an expression for the length of PA in terms of p.
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