6q+q^2=7200

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Solution for 6q+q^2=7200 equation:


Simplifying
6q + q2 = 7200

Solving
6q + q2 = 7200

Solving for variable 'q'.

Reorder the terms:
-7200 + 6q + q2 = 7200 + -7200

Combine like terms: 7200 + -7200 = 0
-7200 + 6q + q2 = 0

Begin completing the square.

Move the constant term to the right:

Add '7200' to each side of the equation.
-7200 + 6q + 7200 + q2 = 0 + 7200

Reorder the terms:
-7200 + 7200 + 6q + q2 = 0 + 7200

Combine like terms: -7200 + 7200 = 0
0 + 6q + q2 = 0 + 7200
6q + q2 = 0 + 7200

Combine like terms: 0 + 7200 = 7200
6q + q2 = 7200

The q term is 6q.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6q + 9 + q2 = 7200 + 9

Reorder the terms:
9 + 6q + q2 = 7200 + 9

Combine like terms: 7200 + 9 = 7209
9 + 6q + q2 = 7209

Factor a perfect square on the left side:
(q + 3)(q + 3) = 7209

Calculate the square root of the right side: 84.905830189

Break this problem into two subproblems by setting 
(q + 3) equal to 84.905830189 and -84.905830189.

Subproblem 1

q + 3 = 84.905830189 Simplifying q + 3 = 84.905830189 Reorder the terms: 3 + q = 84.905830189 Solving 3 + q = 84.905830189 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + q = 84.905830189 + -3 Combine like terms: 3 + -3 = 0 0 + q = 84.905830189 + -3 q = 84.905830189 + -3 Combine like terms: 84.905830189 + -3 = 81.905830189 q = 81.905830189 Simplifying q = 81.905830189

Subproblem 2

q + 3 = -84.905830189 Simplifying q + 3 = -84.905830189 Reorder the terms: 3 + q = -84.905830189 Solving 3 + q = -84.905830189 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + q = -84.905830189 + -3 Combine like terms: 3 + -3 = 0 0 + q = -84.905830189 + -3 q = -84.905830189 + -3 Combine like terms: -84.905830189 + -3 = -87.905830189 q = -87.905830189 Simplifying q = -87.905830189

Solution

The solution to the problem is based on the solutions from the subproblems. q = {81.905830189, -87.905830189}

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