10x^2+11x+18=0

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Solution for 10x^2+11x+18=0 equation:


Simplifying
10x2 + 11x + 18 = 0

Reorder the terms:
18 + 11x + 10x2 = 0

Solving
18 + 11x + 10x2 = 0

Solving for variable 'x'.

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

Divide each side by '10'.
1.8 + 1.1x + x2 = 0

Move the constant term to the right:

Add '-1.8' to each side of the equation.
1.8 + 1.1x + -1.8 + x2 = 0 + -1.8

Reorder the terms:
1.8 + -1.8 + 1.1x + x2 = 0 + -1.8

Combine like terms: 1.8 + -1.8 = 0.0
0.0 + 1.1x + x2 = 0 + -1.8
1.1x + x2 = 0 + -1.8

Combine like terms: 0 + -1.8 = -1.8
1.1x + x2 = -1.8

The x term is 1.1x.  Take half its coefficient (0.55).
Square it (0.3025) and add it to both sides.

Add '0.3025' to each side of the equation.
1.1x + 0.3025 + x2 = -1.8 + 0.3025

Reorder the terms:
0.3025 + 1.1x + x2 = -1.8 + 0.3025

Combine like terms: -1.8 + 0.3025 = -1.4975
0.3025 + 1.1x + x2 = -1.4975

Factor a perfect square on the left side:
(x + 0.55)(x + 0.55) = -1.4975

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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