18x^2+11x+15=0

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Solution for 18x^2+11x+15=0 equation:


Simplifying
18x2 + 11x + 15 = 0

Reorder the terms:
15 + 11x + 18x2 = 0

Solving
15 + 11x + 18x2 = 0

Solving for variable 'x'.

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

Divide each side by '18'.
0.8333333333 + 0.6111111111x + x2 = 0

Move the constant term to the right:

Add '-0.8333333333' to each side of the equation.
0.8333333333 + 0.6111111111x + -0.8333333333 + x2 = 0 + -0.8333333333

Reorder the terms:
0.8333333333 + -0.8333333333 + 0.6111111111x + x2 = 0 + -0.8333333333

Combine like terms: 0.8333333333 + -0.8333333333 = 0.0000000000
0.0000000000 + 0.6111111111x + x2 = 0 + -0.8333333333
0.6111111111x + x2 = 0 + -0.8333333333

Combine like terms: 0 + -0.8333333333 = -0.8333333333
0.6111111111x + x2 = -0.8333333333

The x term is 0.6111111111x.  Take half its coefficient (0.3055555556).
Square it (0.09336419756) and add it to both sides.

Add '0.09336419756' to each side of the equation.
0.6111111111x + 0.09336419756 + x2 = -0.8333333333 + 0.09336419756

Reorder the terms:
0.09336419756 + 0.6111111111x + x2 = -0.8333333333 + 0.09336419756

Combine like terms: -0.8333333333 + 0.09336419756 = -0.73996913574
0.09336419756 + 0.6111111111x + x2 = -0.73996913574

Factor a perfect square on the left side:
(x + 0.3055555556)(x + 0.3055555556) = -0.73996913574

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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