18a^2-1a+4=0

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Solution for 18a^2-1a+4=0 equation:


Simplifying
18a2 + -1a + 4 = 0

Reorder the terms:
4 + -1a + 18a2 = 0

Solving
4 + -1a + 18a2 = 0

Solving for variable 'a'.

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

Divide each side by '18'.
0.2222222222 + -0.05555555556a + a2 = 0

Move the constant term to the right:

Add '-0.2222222222' to each side of the equation.
0.2222222222 + -0.05555555556a + -0.2222222222 + a2 = 0 + -0.2222222222

Reorder the terms:
0.2222222222 + -0.2222222222 + -0.05555555556a + a2 = 0 + -0.2222222222

Combine like terms: 0.2222222222 + -0.2222222222 = 0.0000000000
0.0000000000 + -0.05555555556a + a2 = 0 + -0.2222222222
-0.05555555556a + a2 = 0 + -0.2222222222

Combine like terms: 0 + -0.2222222222 = -0.2222222222
-0.05555555556a + a2 = -0.2222222222

The a term is -0.05555555556a.  Take half its coefficient (-0.02777777778).
Square it (0.0007716049384) and add it to both sides.

Add '0.0007716049384' to each side of the equation.
-0.05555555556a + 0.0007716049384 + a2 = -0.2222222222 + 0.0007716049384

Reorder the terms:
0.0007716049384 + -0.05555555556a + a2 = -0.2222222222 + 0.0007716049384

Combine like terms: -0.2222222222 + 0.0007716049384 = -0.2214506172616
0.0007716049384 + -0.05555555556a + a2 = -0.2214506172616

Factor a perfect square on the left side:
(a + -0.02777777778)(a + -0.02777777778) = -0.2214506172616

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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