81x^2+12x+4=0

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Solution for 81x^2+12x+4=0 equation: 


Simplifying
81x2 + 12x + 4 = 0

Reorder the terms:
4 + 12x + 81x2 = 0

Solving
4 + 12x + 81x2 = 0

Solving for variable 'x'.

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

Divide each side by '81'.
0.04938271605 + 0.1481481481x + x2 = 0

Move the constant term to the right:

Add '-0.04938271605' to each side of the equation.
0.04938271605 + 0.1481481481x + -0.04938271605 + x2 = 0 + -0.04938271605

Reorder the terms:
0.04938271605 + -0.04938271605 + 0.1481481481x + x2 = 0 + -0.04938271605

Combine like terms: 0.04938271605 + -0.04938271605 = 0.00000000000
0.00000000000 + 0.1481481481x + x2 = 0 + -0.04938271605
0.1481481481x + x2 = 0 + -0.04938271605

Combine like terms: 0 + -0.04938271605 = -0.04938271605
0.1481481481x + x2 = -0.04938271605

The x term is 0.1481481481x.  Take half its coefficient (0.07407407405).
Square it (0.005486968446) and add it to both sides.

Add '0.005486968446' to each side of the equation.
0.1481481481x + 0.005486968446 + x2 = -0.04938271605 + 0.005486968446

Reorder the terms:
0.005486968446 + 0.1481481481x + x2 = -0.04938271605 + 0.005486968446

Combine like terms: -0.04938271605 + 0.005486968446 = -0.043895747604
0.005486968446 + 0.1481481481x + x2 = -0.043895747604

Factor a perfect square on the left side:
(x + 0.07407407405)(x + 0.07407407405) = -0.043895747604

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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