90x^2+x+91=0

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Solution for 90x^2+x+91=0 equation:


Simplifying
90x2 + x + 91 = 0

Reorder the terms:
91 + x + 90x2 = 0

Solving
91 + x + 90x2 = 0

Solving for variable 'x'.

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

Divide each side by '90'.
1.011111111 + 0.01111111111x + x2 = 0

Move the constant term to the right:

Add '-1.011111111' to each side of the equation.
1.011111111 + 0.01111111111x + -1.011111111 + x2 = 0 + -1.011111111

Reorder the terms:
1.011111111 + -1.011111111 + 0.01111111111x + x2 = 0 + -1.011111111

Combine like terms: 1.011111111 + -1.011111111 = 0.000000000
0.000000000 + 0.01111111111x + x2 = 0 + -1.011111111
0.01111111111x + x2 = 0 + -1.011111111

Combine like terms: 0 + -1.011111111 = -1.011111111
0.01111111111x + x2 = -1.011111111

The x term is x.  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.
0.01111111111x + 0.25 + x2 = -1.011111111 + 0.25

Reorder the terms:
0.25 + 0.01111111111x + x2 = -1.011111111 + 0.25

Combine like terms: -1.011111111 + 0.25 = -0.761111111
0.25 + 0.01111111111x + x2 = -0.761111111

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = -0.761111111

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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