c-5c^2-25=

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Solution for c-5c^2-25= equation:


Simplifying
c + -5c2 + -25 = 0

Reorder the terms:
-25 + c + -5c2 = 0

Solving
-25 + c + -5c2 = 0

Solving for variable 'c'.

Begin completing the square.  Divide all terms by
-5 the coefficient of the squared term: 

Divide each side by '-5'.
5 + -0.2c + c2 = 0

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + -0.2c + -5 + c2 = 0 + -5

Reorder the terms:
5 + -5 + -0.2c + c2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -0.2c + c2 = 0 + -5
-0.2c + c2 = 0 + -5

Combine like terms: 0 + -5 = -5
-0.2c + c2 = -5

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

Add '0.25' to each side of the equation.
-0.2c + 0.25 + c2 = -5 + 0.25

Reorder the terms:
0.25 + -0.2c + c2 = -5 + 0.25

Combine like terms: -5 + 0.25 = -4.75
0.25 + -0.2c + c2 = -4.75

Factor a perfect square on the left side:
(c + 0.5)(c + 0.5) = -4.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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