Question 1179740
.
the length of a rectangular lot is 4m longer than the width. if the area of the lot is 12 {{{highlight(cross(m))}}} <U>square meters</U>, 
what are its dimensions
~~~~~~~~~~~~~~~~



<pre>
<U>ANSWER</U>.   6 meters by 2 meters.



<U>EXPLANATION</U>.


The equation is


    x*(x+4) = 12

    x^2 + 4x - 12 = 0

    (x+6)*(x-2) = 0


The roots of the equation are  x= -6  and  x= 2.


Of the two roots, we chose the positive one   x= 2 meters,

which gives the answer above.
</pre>

Solved.