2c^2+cd+2d^2=0

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Solution for 2c^2+cd+2d^2=0 equation:


Simplifying
2c2 + cd + 2d2 = 0

Reorder the terms:
cd + 2c2 + 2d2 = 0

Solving
cd + 2c2 + 2d2 = 0

Solving for variable 'c'.

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
0.5cd + c2 + d2 = 0

Move the constant term to the right:

Add '-1d2' to each side of the equation.
0.5cd + c2 + d2 + -1d2 = 0 + -1d2

Combine like terms: d2 + -1d2 = 0
0.5cd + c2 + 0 = 0 + -1d2
0.5cd + c2 = 0 + -1d2
Remove the zero:
0.5cd + c2 = -1d2

The c term is cd.  Take half its coefficient (0.5d).
Square it (0.25d2) and add it to both sides.

Add '0.25d2' to each side of the equation.
0.5cd + c2 + 0.25d2 = -1d2 + 0.25d2

Combine like terms: -1d2 + 0.25d2 = -0.75d2
0.5cd + c2 + 0.25d2 = -0.75d2

Factor a perfect square on the left side:
(c + 0.5d)(c + 0.5d) = -0.75d2

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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