document.write( "Question 604796: A girl's age in 12 years's time is the square of her present age. Fine her present age. \n" ); document.write( "
Algebra.Com's Answer #381416 by alicealc(293)![]() ![]() ![]() You can put this solution on YOUR website! girl's age in present = x\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "0 = (x - 4)*(x + 3) \n" ); document.write( "x - 4 = 0 or x + 3 = 0 \n" ); document.write( "x = 4 or x = -3 \n" ); document.write( "since the age can't be a negative number, we choose x = 4\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "so, at the present, the girl is 4 years old \n" ); document.write( " |