You can
put this solution on YOUR website! area is 84m^2 the length is 5+w width is w what are the length and width of rectangle
It doesn't make sense to form a quadratic for this. All you need is a set of factors of 84 that DIFFER by 5.
This set is: 12 and 7. As the width is shorter, it MUST be 7 m. Can you tell what the length is?
That's it!! Nothing COMPLEX and/or CONFUSING!