ADVANCED EXERCISES

(2) Find all real solutions for each of the following equations by using the quadratic formula. (Note: some equations may not have any real solutions).

 x2 + x -  = 0

 Using quadratic formula, a = 1 , b = 1, c = -.

     -1  sqrt{1 - 4(1)(-)}
 x = ------------------------
               2(1)

     -1  sqrt{1 + 4}
 x = -----------------
             2