0=2q^2-14q+17

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Solution for 0=2q^2-14q+17 equation:


Simplifying
0 = 2q2 + -14q + 17

Reorder the terms:
0 = 17 + -14q + 2q2

Solving
0 = 17 + -14q + 2q2

Solving for variable 'q'.

Combine like terms: 0 + -17 = -17
-17 + 14q + -2q2 = 17 + -14q + 2q2 + -17 + 14q + -2q2

Reorder the terms:
-17 + 14q + -2q2 = 17 + -17 + -14q + 14q + 2q2 + -2q2

Combine like terms: 17 + -17 = 0
-17 + 14q + -2q2 = 0 + -14q + 14q + 2q2 + -2q2
-17 + 14q + -2q2 = -14q + 14q + 2q2 + -2q2

Combine like terms: -14q + 14q = 0
-17 + 14q + -2q2 = 0 + 2q2 + -2q2
-17 + 14q + -2q2 = 2q2 + -2q2

Combine like terms: 2q2 + -2q2 = 0
-17 + 14q + -2q2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
8.5 + -7q + q2 = 0

Move the constant term to the right:

Add '-8.5' to each side of the equation.
8.5 + -7q + -8.5 + q2 = 0 + -8.5

Reorder the terms:
8.5 + -8.5 + -7q + q2 = 0 + -8.5

Combine like terms: 8.5 + -8.5 = 0.0
0.0 + -7q + q2 = 0 + -8.5
-7q + q2 = 0 + -8.5

Combine like terms: 0 + -8.5 = -8.5
-7q + q2 = -8.5

The q term is -7q.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7q + 12.25 + q2 = -8.5 + 12.25

Reorder the terms:
12.25 + -7q + q2 = -8.5 + 12.25

Combine like terms: -8.5 + 12.25 = 3.75
12.25 + -7q + q2 = 3.75

Factor a perfect square on the left side:
(q + -3.5)(q + -3.5) = 3.75

Calculate the square root of the right side: 1.936491673

Break this problem into two subproblems by setting 
(q + -3.5) equal to 1.936491673 and -1.936491673.

Subproblem 1

q + -3.5 = 1.936491673 Simplifying q + -3.5 = 1.936491673 Reorder the terms: -3.5 + q = 1.936491673 Solving -3.5 + q = 1.936491673 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + q = 1.936491673 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + q = 1.936491673 + 3.5 q = 1.936491673 + 3.5 Combine like terms: 1.936491673 + 3.5 = 5.436491673 q = 5.436491673 Simplifying q = 5.436491673

Subproblem 2

q + -3.5 = -1.936491673 Simplifying q + -3.5 = -1.936491673 Reorder the terms: -3.5 + q = -1.936491673 Solving -3.5 + q = -1.936491673 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + q = -1.936491673 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + q = -1.936491673 + 3.5 q = -1.936491673 + 3.5 Combine like terms: -1.936491673 + 3.5 = 1.563508327 q = 1.563508327 Simplifying q = 1.563508327

Solution

The solution to the problem is based on the solutions from the subproblems. q = {5.436491673, 1.563508327}

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