Question

what is the solution of this equation x^2-2x+4=0

Answer 1

you should use the quadratic formula or solve by completing the square

Answer 2

\[ax^2+bx+c=0 => x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}\]

Answer 3

a=1,b=-2,c=4
just plug into the formula i just gave you

Answer 4

We'll see that no real solution exists here.

Answer 5

http://www.wolframalpha.com/input/?i=x%5E2+-2x+%2B+4+%3D+0

Answer 6

X^2 - 2X + 4 = 0 ,

X = [ 2 +/- (-12) ^ 1/2 ] /2 = 1 +/- ( 3) ^ 1/2 i