-5q^2+35q-26=0

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Solution for -5q^2+35q-26=0 equation:


Simplifying
-5q2 + 35q + -26 = 0

Reorder the terms:
-26 + 35q + -5q2 = 0

Solving
-26 + 35q + -5q2 = 0

Solving for variable 'q'.

Begin completing the square.  Divide all terms by
-5 the coefficient of the squared term: 

Divide each side by '-5'.
5.2 + -7q + q2 = 0

Move the constant term to the right:

Add '-5.2' to each side of the equation.
5.2 + -7q + -5.2 + q2 = 0 + -5.2

Reorder the terms:
5.2 + -5.2 + -7q + q2 = 0 + -5.2

Combine like terms: 5.2 + -5.2 = 0.0
0.0 + -7q + q2 = 0 + -5.2
-7q + q2 = 0 + -5.2

Combine like terms: 0 + -5.2 = -5.2
-7q + q2 = -5.2

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 = -5.2 + 12.25

Reorder the terms:
12.25 + -7q + q2 = -5.2 + 12.25

Combine like terms: -5.2 + 12.25 = 7.05
12.25 + -7q + q2 = 7.05

Factor a perfect square on the left side:
(q + -3.5)(q + -3.5) = 7.05

Calculate the square root of the right side: 2.655183609

Break this problem into two subproblems by setting 
(q + -3.5) equal to 2.655183609 and -2.655183609.

Subproblem 1

q + -3.5 = 2.655183609 Simplifying q + -3.5 = 2.655183609 Reorder the terms: -3.5 + q = 2.655183609 Solving -3.5 + q = 2.655183609 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 = 2.655183609 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + q = 2.655183609 + 3.5 q = 2.655183609 + 3.5 Combine like terms: 2.655183609 + 3.5 = 6.155183609 q = 6.155183609 Simplifying q = 6.155183609

Subproblem 2

q + -3.5 = -2.655183609 Simplifying q + -3.5 = -2.655183609 Reorder the terms: -3.5 + q = -2.655183609 Solving -3.5 + q = -2.655183609 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 = -2.655183609 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + q = -2.655183609 + 3.5 q = -2.655183609 + 3.5 Combine like terms: -2.655183609 + 3.5 = 0.844816391 q = 0.844816391 Simplifying q = 0.844816391

Solution

The solution to the problem is based on the solutions from the subproblems. q = {6.155183609, 0.844816391}

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