# SOLUTION: a rectangular book is 7 cm longer than it is wide. its area is 144 cm find the length and width.

Algebra ->  Algebra  -> Customizable Word Problem Solvers  -> Geometry -> SOLUTION: a rectangular book is 7 cm longer than it is wide. its area is 144 cm find the length and width.      Log On

 Ad: Over 600 Algebra Word Problems at edhelper.com Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help! Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!

 Word Problems: Geometry Solvers Lessons Answers archive Quiz In Depth

 Question 603370: a rectangular book is 7 cm longer than it is wide. its area is 144 cm find the length and width.Answer by jim_thompson5910(28715)   (Show Source): You can put this solution on YOUR website!A = LW 144 = x(x+7) x(x+7) = 144 x^2+7x = 144 x^2+7x-144 = 0 (x+16)(x-9) = 0 x+16 = 0 or x-9 = 0 x = -16 or x = 9 Throw out the negative solution to get the only solution of x = 9 So the width is x = 9 cm and the length is x+7 = 9+7 = 16 cm.