Question 1036822
.
How to solve the quadratic equation on problem below:
The length of a rectangle is 4m more than the width. The area is 30m2.find the width and length. 
~~~~~~~~~~~~~~~~~~~~~~~~~~~


<pre>
W*(W+4) = 30,

{{{W^2 + 4W - 30}}} = {{{0}}},

{{{W[1,2]}}} = {{{(-4 +- sqrt (16+4*30))/2}}} =  you do calc. and take the positive root.
</pre>