document.write( "Question 1014012: the side of one square is 3 cm longer than twice the length of the side of a second square , is 105 centimeter to the second power. Find the length of the side of each square \n" ); document.write( "
Algebra.Com's Answer #630341 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! the side of one square is 3 cm longer than twice the length of the side of a second square, is 105 centimeter to the second power. \n" ); document.write( " Find the length of the side of each square \n" ); document.write( ": \n" ); document.write( "let x = the side of the 2nd square \n" ); document.write( "then \n" ); document.write( "(2x+3) = the side of the 1st square \n" ); document.write( ": \n" ); document.write( "(2x+3)^2 = 105 \n" ); document.write( "FOIL \n" ); document.write( "4x^2 + 6x + 6x + 9 = 105 \n" ); document.write( "4x^2 + 12x + 9 - 105 = 0 \n" ); document.write( "4x^2 + 12x - 96 = 0 \n" ); document.write( "simplify, divide by 4 \n" ); document.write( "x^2 + 3x - 24 = 0 \n" ); document.write( "Using the quadratic formula, I got a positive solution of: \n" ); document.write( "x = 3.623cm, the side of the 2nd square \n" ); document.write( ": \n" ); document.write( "then side of the 1st square \n" ); document.write( "2(3.623) + 3 = 10.246 cm \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Check: 10.246^2 = 104.98 ~ 105 \n" ); document.write( " |