5q^2+2q=-20

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Solution for 5q^2+2q=-20 equation:


Simplifying
5q2 + 2q = -20

Reorder the terms:
2q + 5q2 = -20

Solving
2q + 5q2 = -20

Solving for variable 'q'.

Reorder the terms:
20 + 2q + 5q2 = -20 + 20

Combine like terms: -20 + 20 = 0
20 + 2q + 5q2 = 0

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

Divide each side by '5'.
4 + 0.4q + q2 = 0

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + 0.4q + -4 + q2 = 0 + -4

Reorder the terms:
4 + -4 + 0.4q + q2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 0.4q + q2 = 0 + -4
0.4q + q2 = 0 + -4

Combine like terms: 0 + -4 = -4
0.4q + q2 = -4

The q term is 0.4q.  Take half its coefficient (0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
0.4q + 0.04 + q2 = -4 + 0.04

Reorder the terms:
0.04 + 0.4q + q2 = -4 + 0.04

Combine like terms: -4 + 0.04 = -3.96
0.04 + 0.4q + q2 = -3.96

Factor a perfect square on the left side:
(q + 0.2)(q + 0.2) = -3.96

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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