11+q-3q^2+18q^2-2=

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Solution for 11+q-3q^2+18q^2-2= equation:


Simplifying
11 + q + -3q2 + 18q2 + -2 = 0

Reorder the terms:
11 + -2 + q + -3q2 + 18q2 = 0

Combine like terms: 11 + -2 = 9
9 + q + -3q2 + 18q2 = 0

Combine like terms: -3q2 + 18q2 = 15q2
9 + q + 15q2 = 0

Solving
9 + q + 15q2 = 0

Solving for variable 'q'.

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

Divide each side by '15'.
0.6 + 0.06666666667q + q2 = 0

Move the constant term to the right:

Add '-0.6' to each side of the equation.
0.6 + 0.06666666667q + -0.6 + q2 = 0 + -0.6

Reorder the terms:
0.6 + -0.6 + 0.06666666667q + q2 = 0 + -0.6

Combine like terms: 0.6 + -0.6 = 0.0
0.0 + 0.06666666667q + q2 = 0 + -0.6
0.06666666667q + q2 = 0 + -0.6

Combine like terms: 0 + -0.6 = -0.6
0.06666666667q + q2 = -0.6

The q term is q.  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.
0.06666666667q + 0.25 + q2 = -0.6 + 0.25

Reorder the terms:
0.25 + 0.06666666667q + q2 = -0.6 + 0.25

Combine like terms: -0.6 + 0.25 = -0.35
0.25 + 0.06666666667q + q2 = -0.35

Factor a perfect square on the left side:
(q + 0.5)(q + 0.5) = -0.35

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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