14=4q+.5q^2

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Solution for 14=4q+.5q^2 equation:


Simplifying
14 = 4q + 0.5q2

Solving
14 = 4q + 0.5q2

Solving for variable 'q'.

Reorder the terms:
14 + -4q + -0.5q2 = 4q + -4q + 0.5q2 + -0.5q2

Combine like terms: 4q + -4q = 0
14 + -4q + -0.5q2 = 0 + 0.5q2 + -0.5q2
14 + -4q + -0.5q2 = 0.5q2 + -0.5q2

Combine like terms: 0.5q2 + -0.5q2 = 0.0
14 + -4q + -0.5q2 = 0.0

Begin completing the square.  Divide all terms by
-0.5 the coefficient of the squared term: 

Divide each side by '-0.5'.
-28 + 8q + q2 = 0

Move the constant term to the right:

Add '28' to each side of the equation.
-28 + 8q + 28 + q2 = 0 + 28

Reorder the terms:
-28 + 28 + 8q + q2 = 0 + 28

Combine like terms: -28 + 28 = 0
0 + 8q + q2 = 0 + 28
8q + q2 = 0 + 28

Combine like terms: 0 + 28 = 28
8q + q2 = 28

The q term is 8q.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8q + 16 + q2 = 28 + 16

Reorder the terms:
16 + 8q + q2 = 28 + 16

Combine like terms: 28 + 16 = 44
16 + 8q + q2 = 44

Factor a perfect square on the left side:
(q + 4)(q + 4) = 44

Calculate the square root of the right side: 6.633249581

Break this problem into two subproblems by setting 
(q + 4) equal to 6.633249581 and -6.633249581.

Subproblem 1

q + 4 = 6.633249581 Simplifying q + 4 = 6.633249581 Reorder the terms: 4 + q = 6.633249581 Solving 4 + q = 6.633249581 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + q = 6.633249581 + -4 Combine like terms: 4 + -4 = 0 0 + q = 6.633249581 + -4 q = 6.633249581 + -4 Combine like terms: 6.633249581 + -4 = 2.633249581 q = 2.633249581 Simplifying q = 2.633249581

Subproblem 2

q + 4 = -6.633249581 Simplifying q + 4 = -6.633249581 Reorder the terms: 4 + q = -6.633249581 Solving 4 + q = -6.633249581 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + q = -6.633249581 + -4 Combine like terms: 4 + -4 = 0 0 + q = -6.633249581 + -4 q = -6.633249581 + -4 Combine like terms: -6.633249581 + -4 = -10.633249581 q = -10.633249581 Simplifying q = -10.633249581

Solution

The solution to the problem is based on the solutions from the subproblems. q = {2.633249581, -10.633249581}

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