9x^2+9x+20=0

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Solution for 9x^2+9x+20=0 equation:


Simplifying
9x2 + 9x + 20 = 0

Reorder the terms:
20 + 9x + 9x2 = 0

Solving
20 + 9x + 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'.
2.222222222 + x + x2 = 0

Move the constant term to the right:

Add '-2.222222222' to each side of the equation.
2.222222222 + x + -2.222222222 + x2 = 0 + -2.222222222

Reorder the terms:
2.222222222 + -2.222222222 + x + x2 = 0 + -2.222222222

Combine like terms: 2.222222222 + -2.222222222 = 0.000000000
0.000000000 + x + x2 = 0 + -2.222222222
x + x2 = 0 + -2.222222222

Combine like terms: 0 + -2.222222222 = -2.222222222
x + x2 = -2.222222222

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.
 + 0.25 + x2 = -2.222222222 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = -2.222222222 + 0.25

Combine like terms: -2.222222222 + 0.25 = -1.972222222
1.25 + x2 = -1.972222222

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = -1.972222222

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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