-9x^2+2x-4=0

Solution for -9x^2+2x-4=0 equation:

Simplifying
-9x2 + 2x + -4 = 0

Reorder the terms:
-4 + 2x + -9x2 = 0

Solving
-4 + 2x + -9x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-9 the coefficient of the squared term: 

Divide each side by '-9'.
0.4444444444 + -0.2222222222x + x2 = 0

Move the constant term to the right:

Add '-0.4444444444' to each side of the equation.
0.4444444444 + -0.2222222222x + -0.4444444444 + x2 = 0 + -0.4444444444

Reorder the terms:
0.4444444444 + -0.4444444444 + -0.2222222222x + x2 = 0 + -0.4444444444

Combine like terms: 0.4444444444 + -0.4444444444 = 0.0000000000
0.0000000000 + -0.2222222222x + x2 = 0 + -0.4444444444
-0.2222222222x + x2 = 0 + -0.4444444444

Combine like terms: 0 + -0.4444444444 = -0.4444444444
-0.2222222222x + x2 = -0.4444444444

The x term is -0.2222222222x.  Take half its coefficient (-0.1111111111).
Square it (0.01234567901) and add it to both sides.

Add '0.01234567901' to each side of the equation.
-0.2222222222x + 0.01234567901 + x2 = -0.4444444444 + 0.01234567901

Reorder the terms:
0.01234567901 + -0.2222222222x + x2 = -0.4444444444 + 0.01234567901

Combine like terms: -0.4444444444 + 0.01234567901 = -0.43209876539
0.01234567901 + -0.2222222222x + x2 = -0.43209876539

Factor a perfect square on the left side:
(x + -0.1111111111)(x + -0.1111111111) = -0.43209876539

Can't calculate square root of the right side.

The solution to this equation could not be determined.