Question 884839
A computer manufacturing company would like to come up with a new laptop 
computer such that its monitor is 80 square inches smaller than the present ones. 
Suppose the length of the monitor of the larger computer is 5 inches longer than 
its width and the area of the smaller computer is 70 square inches. What are the 
dimensions of the monitor of the larger computer?
<pre>
Let width of larger monitor be W
Then length of larger monitor = W + 5
Area of larger monitor = W(W + 5), or {{{W^2 + 5W}}}
Since area of smaller monitor is 70 sq”, and since this area is 80 sq” smaller
than the larger monitor, then area of larger monitor = 150 (70 + 80) sq"
Now, we can say that: {{{W^2 + 5W = 150}}}_______{{{W^2 + 5W - 150 = 0}}}
(W - 10)(W + 15) = 0 
Width of larger monitor, or W = {{{highlight_green(highlight_green(10))}}}”            OR          W = - 15 (ignore)
Length of larger monitor: 10 + 5, or {{{highlight_green(highlight_green(15))}}}”