Answer 1

`x^2 - 6x = 27`

`=> x^2 - 6x - 27 = 0`

Here a= 1, b= -6 and c = -27

Then `x = (-b +-  sqrt((-6)^2 - 4(1)(-27)))/(2(1))`

`= (6 -+ 12)/2 = (6 +12)/2 and (6 - 12)/2 = 9` and -3