document.write( "Question 304033: Within 11 years, the age of Peter will be half the square of teh age he was 13 years ago. Calculate the current age of peter. \n" ); document.write( "

Algebra.Com's Answer #217910 by JBarnum(2146) $\"\"$ $\"About$

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$\"P%2B11=%281%2F2%29%28P-13%29%5E2\"$
\n" ); document.write( " $\"P%2B11=%281%2F2%29%28P%5E2-26p%2B169%29\"$
\n" ); document.write( " $\"2%28P%2B11%29=%281%2F2%29%282%29%28P%5E2-26p%2B169%29\"$
\n" ); document.write( " $\"2P%2B22=P%5E2-26p%2B169\"$
\n" ); document.write( " $\"0=P%5E2-28p%2B147\"$ -7 and -21
\n" ); document.write( " $\"%28P-7%29%28P-21%29=0\"$
\n" ); document.write( " $\"P=7\"$ , $\"21\"$ cant be 7 as 13 years from 7 is negative
\n" ); document.write( "so peter is $\"highlight%2821%29\"$
\n" ); document.write( "checking
\n" ); document.write( " $\"21%2B11=32\"$
\n" ); document.write( " $\"32=%281%2F2%29%2821-13%29%5E2\"$
\n" ); document.write( " $\"32=%281%2F2%29%288%29%5E2\"$
\n" ); document.write( " $\"32=%281%2F2%2964\"$
\n" ); document.write( " $\"32=32\"$
\n" ); document.write( "correct \n" ); document.write( "

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