document.write( "Question 824982: The length of a rectangle is 3 times it's width. Is both dimensions are increased by 2 centimeters, the area is 32 square centimeters. What was the original length? \n" ); document.write( "
Algebra.Com's Answer #496910 by TimothyLamb(4379)![]() ![]() You can put this solution on YOUR website! --- \n" ); document.write( "x = length \n" ); document.write( "y = width \n" ); document.write( "--- \n" ); document.write( "x = 3y \n" ); document.write( "(x + 2)(y + 2) = 32 \n" ); document.write( "--- \n" ); document.write( "(x + 2)(y + 2) = 32 \n" ); document.write( "(3y + 2)(y + 2) = 32 \n" ); document.write( "3yy + 6y + 2y + 4 = 32 \n" ); document.write( "3yy + 8y - 28 = 0 \n" ); document.write( "--- \n" ); document.write( "the above quadratic equation is in standard form, with a=3, b=8, and c=-28 \n" ); document.write( "--- \n" ); document.write( "to solve the quadratic equation, by using the quadratic formula, copy and paste this: \n" ); document.write( "3 8 -28 \n" ); document.write( "into this solver: https://sooeet.com/math/quadratic-equation-solver.php \n" ); document.write( "--- \n" ); document.write( "this quadratic has two real roots (the x-intercepts), which are: \n" ); document.write( "y = 2 \n" ); document.write( "y = -4.66666667 \n" ); document.write( "--- \n" ); document.write( "the negative root does not fit the problem statement, so use the positive root \n" ); document.write( "--- \n" ); document.write( "answer: \n" ); document.write( "x = length = 6 cm \n" ); document.write( "y = width = 2 cm \n" ); document.write( "--- \n" ); document.write( "Solve and graph linear equations: \n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php \n" ); document.write( "--- \n" ); document.write( "Solve quadratic equations, quadratic formula: \n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php \n" ); document.write( "--- \n" ); document.write( "Solve systems of linear equations up to 6-equations 6-variables: \n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php \n" ); document.write( " |