How to solve Quadratic equation?

Please tell me the easy method to find the solution of quadratic equation. Thanks

Factoring method

x^2-4x+3=0

x^2-3x-x+3=0

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

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

x=3 or x=1

Completion of squares method

x^2 -6x +1 =0

x^{2}-2*x*3+3^{2} =3^{2}-1

(x-3)^{2} =8

x-3= ±√8

x = 3 ±√8

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