6.1C^2-3.1C+4+4.2C-2.5C^2-0.1=

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Solution for 6.1C^2-3.1C+4+4.2C-2.5C^2-0.1= equation: 


Simplifying
6.1C2 + -3.1C + 4 + 4.2C + -2.5C2 + -0.1 = 0

Reorder the terms:
4 + -0.1 + -3.1C + 4.2C + 6.1C2 + -2.5C2 = 0

Combine like terms: 4 + -0.1 = 3.9
3.9 + -3.1C + 4.2C + 6.1C2 + -2.5C2 = 0

Combine like terms: -3.1C + 4.2C = 1.1C
3.9 + 1.1C + 6.1C2 + -2.5C2 = 0

Combine like terms: 6.1C2 + -2.5C2 = 3.6C2
3.9 + 1.1C + 3.6C2 = 0

Solving
3.9 + 1.1C + 3.6C2 = 0

Solving for variable 'C'.

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

Divide each side by '3.6'.
1.083333333 + 0.3055555556C + C2 = 0

Move the constant term to the right:

Add '-1.083333333' to each side of the equation.
1.083333333 + 0.3055555556C + -1.083333333 + C2 = 0 + -1.083333333

Reorder the terms:
1.083333333 + -1.083333333 + 0.3055555556C + C2 = 0 + -1.083333333

Combine like terms: 1.083333333 + -1.083333333 = 0.000000000
0.000000000 + 0.3055555556C + C2 = 0 + -1.083333333
0.3055555556C + C2 = 0 + -1.083333333

Combine like terms: 0 + -1.083333333 = -1.083333333
0.3055555556C + C2 = -1.083333333

The C term is 0.3055555556C.  Take half its coefficient (0.1527777778).
Square it (0.02334104939) and add it to both sides.

Add '0.02334104939' to each side of the equation.
0.3055555556C + 0.02334104939 + C2 = -1.083333333 + 0.02334104939

Reorder the terms:
0.02334104939 + 0.3055555556C + C2 = -1.083333333 + 0.02334104939

Combine like terms: -1.083333333 + 0.02334104939 = -1.05999228361
0.02334104939 + 0.3055555556C + C2 = -1.05999228361

Factor a perfect square on the left side:
(C + 0.1527777778)(C + 0.1527777778) = -1.05999228361

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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