16c^2+20c+25=0

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Solution for 16c^2+20c+25=0 equation:


Simplifying
16c2 + 20c + 25 = 0

Reorder the terms:
25 + 20c + 16c2 = 0

Solving
25 + 20c + 16c2 = 0

Solving for variable 'c'.

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

Divide each side by '16'.
1.5625 + 1.25c + c2 = 0

Move the constant term to the right:

Add '-1.5625' to each side of the equation.
1.5625 + 1.25c + -1.5625 + c2 = 0 + -1.5625

Reorder the terms:
1.5625 + -1.5625 + 1.25c + c2 = 0 + -1.5625

Combine like terms: 1.5625 + -1.5625 = 0.0000
0.0000 + 1.25c + c2 = 0 + -1.5625
1.25c + c2 = 0 + -1.5625

Combine like terms: 0 + -1.5625 = -1.5625
1.25c + c2 = -1.5625

The c term is 1.25c.  Take half its coefficient (0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
1.25c + 0.390625 + c2 = -1.5625 + 0.390625

Reorder the terms:
0.390625 + 1.25c + c2 = -1.5625 + 0.390625

Combine like terms: -1.5625 + 0.390625 = -1.171875
0.390625 + 1.25c + c2 = -1.171875

Factor a perfect square on the left side:
(c + 0.625)(c + 0.625) = -1.171875

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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