q^2+3q=-16

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Solution for q^2+3q=-16 equation:


Simplifying
q2 + 3q = -16

Reorder the terms:
3q + q2 = -16

Solving
3q + q2 = -16

Solving for variable 'q'.

Reorder the terms:
16 + 3q + q2 = -16 + 16

Combine like terms: -16 + 16 = 0
16 + 3q + q2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-16' to each side of the equation.
16 + 3q + -16 + q2 = 0 + -16

Reorder the terms:
16 + -16 + 3q + q2 = 0 + -16

Combine like terms: 16 + -16 = 0
0 + 3q + q2 = 0 + -16
3q + q2 = 0 + -16

Combine like terms: 0 + -16 = -16
3q + q2 = -16

The q term is 3q.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3q + 2.25 + q2 = -16 + 2.25

Reorder the terms:
2.25 + 3q + q2 = -16 + 2.25

Combine like terms: -16 + 2.25 = -13.75
2.25 + 3q + q2 = -13.75

Factor a perfect square on the left side:
(q + 1.5)(q + 1.5) = -13.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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