c^2-2c+4=0

Solution for c^2-2c+4=0 equation:

Simplifying
c2 + -2c + 4 = 0

Reorder the terms:
4 + -2c + c2 = 0

Solving
4 + -2c + c2 = 0

Solving for variable 'c'.

Begin completing the square.

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + -2c + -4 + c2 = 0 + -4

Reorder the terms:
4 + -4 + -2c + c2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -2c + c2 = 0 + -4
-2c + c2 = 0 + -4

Combine like terms: 0 + -4 = -4
-2c + c2 = -4

The c term is -2c.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2c + 1 + c2 = -4 + 1

Reorder the terms:
1 + -2c + c2 = -4 + 1

Combine like terms: -4 + 1 = -3
1 + -2c + c2 = -3

Factor a perfect square on the left side:
(c + -1)(c + -1) = -3

Can't calculate square root of the right side.

The solution to this equation could not be determined.