Question

x^2 + 6 = 4x

Answer 1

2-i sqrt(2)

Answer 2

x^2 - 4x + 6 = 0
use formula

x = [-(-4) +- sqrt( 16 - 4 * 1 * 6) ] / 2

Answer 3

and 2+i sqrt(2)

Answer 4

x^2-4x+6=0 it's not factorable so you have to use the quadratic equation. you should know that.