50q^2+q=120

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Solution for 50q^2+q=120 equation:


Simplifying
50q2 + q = 120

Reorder the terms:
q + 50q2 = 120

Solving
q + 50q2 = 120

Solving for variable 'q'.

Reorder the terms:
-120 + q + 50q2 = 120 + -120

Combine like terms: 120 + -120 = 0
-120 + q + 50q2 = 0

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

Divide each side by '50'.
-2.4 + 0.02q + q2 = 0

Move the constant term to the right:

Add '2.4' to each side of the equation.
-2.4 + 0.02q + 2.4 + q2 = 0 + 2.4

Reorder the terms:
-2.4 + 2.4 + 0.02q + q2 = 0 + 2.4

Combine like terms: -2.4 + 2.4 = 0.0
0.0 + 0.02q + q2 = 0 + 2.4
0.02q + q2 = 0 + 2.4

Combine like terms: 0 + 2.4 = 2.4
0.02q + q2 = 2.4

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.
0.02q + 0.25 + q2 = 2.4 + 0.25

Reorder the terms:
0.25 + 0.02q + q2 = 2.4 + 0.25

Combine like terms: 2.4 + 0.25 = 2.65
0.25 + 0.02q + q2 = 2.65

Factor a perfect square on the left side:
(q + 0.5)(q + 0.5) = 2.65

Calculate the square root of the right side: 1.62788206

Break this problem into two subproblems by setting 
(q + 0.5) equal to 1.62788206 and -1.62788206.

Subproblem 1

q + 0.5 = 1.62788206 Simplifying q + 0.5 = 1.62788206 Reorder the terms: 0.5 + q = 1.62788206 Solving 0.5 + q = 1.62788206 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + q = 1.62788206 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + q = 1.62788206 + -0.5 q = 1.62788206 + -0.5 Combine like terms: 1.62788206 + -0.5 = 1.12788206 q = 1.12788206 Simplifying q = 1.12788206

Subproblem 2

q + 0.5 = -1.62788206 Simplifying q + 0.5 = -1.62788206 Reorder the terms: 0.5 + q = -1.62788206 Solving 0.5 + q = -1.62788206 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + q = -1.62788206 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + q = -1.62788206 + -0.5 q = -1.62788206 + -0.5 Combine like terms: -1.62788206 + -0.5 = -2.12788206 q = -2.12788206 Simplifying q = -2.12788206

Solution

The solution to the problem is based on the solutions from the subproblems. q = {1.12788206, -2.12788206}

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