Solve the quadratic equation numerically (using tables of x- and y- values). -4x=-x2+12

-4x=-x2+12 should be written  -4x=-x^2+12, with " ^ " representing exponentiation.

You are to invent a table of x values and find the difference between -4x and -x^ 2+12.  The smaller the difference, the closer you are to finding the correct root, x.

To get you started:

 x     -4x              x^2+12      difference
---       
 2       -8                 16               24 (pretty bad!)
-4       16                28              12 (better)
 -10   40              112                72 (much worse)

To answer this problem correctly, you must present such a table, even tho' it'd be faster to use the quadratic formula (or some other method) to find x.

Heptagon is the correct ans

It is 5.8 you add all of the up to equat 180 then solve the equation