9x^2=-4x-9

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


Simplifying
9x2 = -4x + -9

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

Solving
9x2 = -9 + -4x

Solving for variable 'x'.

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

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

Combine like terms: -9 + 9 = 0
9 + 4x + 9x2 = 0 + -4x + 4x
9 + 4x + 9x2 = -4x + 4x

Combine like terms: -4x + 4x = 0
9 + 4x + 9x2 = 0

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

Divide each side by '9'.
1 + 0.4444444444x + x2 = 0

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + 0.4444444444x + -1 + x2 = 0 + -1

Reorder the terms:
1 + -1 + 0.4444444444x + x2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 0.4444444444x + x2 = 0 + -1
0.4444444444x + x2 = 0 + -1

Combine like terms: 0 + -1 = -1
0.4444444444x + x2 = -1

The x term is 0.4444444444x.  Take half its coefficient (0.2222222222).
Square it (0.04938271604) and add it to both sides.

Add '0.04938271604' to each side of the equation.
0.4444444444x + 0.04938271604 + x2 = -1 + 0.04938271604

Reorder the terms:
0.04938271604 + 0.4444444444x + x2 = -1 + 0.04938271604

Combine like terms: -1 + 0.04938271604 = -0.95061728396
0.04938271604 + 0.4444444444x + x2 = -0.95061728396

Factor a perfect square on the left side:
(x + 0.2222222222)(x + 0.2222222222) = -0.95061728396

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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