11x^2+18x+15=0

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


Simplifying
11x2 + 18x + 15 = 0

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

Solving
15 + 18x + 11x2 = 0

Solving for variable 'x'.

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

Divide each side by '11'.
1.363636364 + 1.636363636x + x2 = 0

Move the constant term to the right:

Add '-1.363636364' to each side of the equation.
1.363636364 + 1.636363636x + -1.363636364 + x2 = 0 + -1.363636364

Reorder the terms:
1.363636364 + -1.363636364 + 1.636363636x + x2 = 0 + -1.363636364

Combine like terms: 1.363636364 + -1.363636364 = 0.000000000
0.000000000 + 1.636363636x + x2 = 0 + -1.363636364
1.636363636x + x2 = 0 + -1.363636364

Combine like terms: 0 + -1.363636364 = -1.363636364
1.636363636x + x2 = -1.363636364

The x term is 1.636363636x.  Take half its coefficient (0.818181818).
Square it (0.6694214873) and add it to both sides.

Add '0.6694214873' to each side of the equation.
1.636363636x + 0.6694214873 + x2 = -1.363636364 + 0.6694214873

Reorder the terms:
0.6694214873 + 1.636363636x + x2 = -1.363636364 + 0.6694214873

Combine like terms: -1.363636364 + 0.6694214873 = -0.6942148767
0.6694214873 + 1.636363636x + x2 = -0.6942148767

Factor a perfect square on the left side:
(x + 0.818181818)(x + 0.818181818) = -0.6942148767

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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