INTRODUCTORY EXERCISES

(1)

x2 + 10x - 2 = 0

 x2 + 10x - 2 = 0
 x2 + 10x     = 2
x2 + 10x + 25 = 2 + 25
     (x + 5)2 = 27
      (x + 5) = sqrt27
            x = -5 sqrt27