d^2-4d+5=0

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Solution for d^2-4d+5=0 equation:


Simplifying
d2 + -4d + 5 = 0

Reorder the terms:
5 + -4d + d2 = 0

Solving
5 + -4d + d2 = 0

Solving for variable 'd'.

Begin completing the square.

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + -4d + -5 + d2 = 0 + -5

Reorder the terms:
5 + -5 + -4d + d2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -4d + d2 = 0 + -5
-4d + d2 = 0 + -5

Combine like terms: 0 + -5 = -5
-4d + d2 = -5

The d term is -4d.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4d + 4 + d2 = -5 + 4

Reorder the terms:
4 + -4d + d2 = -5 + 4

Combine like terms: -5 + 4 = -1
4 + -4d + d2 = -1

Factor a perfect square on the left side:
(d + -2)(d + -2) = -1

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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