Question

Solve by completing the square

Answer 1

Explanation:

3
`x^(2)`-6x+9=0

3
`x^(2)` +3x-9x+9=0 (splitting -6x as +3x & -9x)

3x(x+1)-9(x+1)=0

(x+1)(3x-9)=0

x=-1,3

Answer 2

(6 ± √72i) / 6

Hope this helps.