q^2-10q-17=0

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Solution for q^2-10q-17=0 equation:


Simplifying
q2 + -10q + -17 = 0

Reorder the terms:
-17 + -10q + q2 = 0

Solving
-17 + -10q + q2 = 0

Solving for variable 'q'.

Begin completing the square.

Move the constant term to the right:

Add '17' to each side of the equation.
-17 + -10q + 17 + q2 = 0 + 17

Reorder the terms:
-17 + 17 + -10q + q2 = 0 + 17

Combine like terms: -17 + 17 = 0
0 + -10q + q2 = 0 + 17
-10q + q2 = 0 + 17

Combine like terms: 0 + 17 = 17
-10q + q2 = 17

The q term is -10q.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10q + 25 + q2 = 17 + 25

Reorder the terms:
25 + -10q + q2 = 17 + 25

Combine like terms: 17 + 25 = 42
25 + -10q + q2 = 42

Factor a perfect square on the left side:
(q + -5)(q + -5) = 42

Calculate the square root of the right side: 6.480740698

Break this problem into two subproblems by setting 
(q + -5) equal to 6.480740698 and -6.480740698.

Subproblem 1

q + -5 = 6.480740698 Simplifying q + -5 = 6.480740698 Reorder the terms: -5 + q = 6.480740698 Solving -5 + q = 6.480740698 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + q = 6.480740698 + 5 Combine like terms: -5 + 5 = 0 0 + q = 6.480740698 + 5 q = 6.480740698 + 5 Combine like terms: 6.480740698 + 5 = 11.480740698 q = 11.480740698 Simplifying q = 11.480740698

Subproblem 2

q + -5 = -6.480740698 Simplifying q + -5 = -6.480740698 Reorder the terms: -5 + q = -6.480740698 Solving -5 + q = -6.480740698 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + q = -6.480740698 + 5 Combine like terms: -5 + 5 = 0 0 + q = -6.480740698 + 5 q = -6.480740698 + 5 Combine like terms: -6.480740698 + 5 = -1.480740698 q = -1.480740698 Simplifying q = -1.480740698

Solution

The solution to the problem is based on the solutions from the subproblems. q = {11.480740698, -1.480740698}

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