x^2 -x + 0.06 = 0
a = 1,b = -1,c = 0.06
b^ - 4ac = 1 - 0.24 = 0.76>0
所以x = (1 + 根号0.76）/2
x = (1 - 根号0.76）/2
即：
x = 1/2 + （根号19）/10 或
x = 1/2 - （根号19）/10
2）
x^2 -x - 132 = 0
(x-12)(x+11)=0
x = 12,x = -11