q^2-12q+30=0

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Solution for q^2-12q+30=0 equation:


Simplifying
q2 + -12q + 30 = 0

Reorder the terms:
30 + -12q + q2 = 0

Solving
30 + -12q + q2 = 0

Solving for variable 'q'.

Begin completing the square.

Move the constant term to the right:

Add '-30' to each side of the equation.
30 + -12q + -30 + q2 = 0 + -30

Reorder the terms:
30 + -30 + -12q + q2 = 0 + -30

Combine like terms: 30 + -30 = 0
0 + -12q + q2 = 0 + -30
-12q + q2 = 0 + -30

Combine like terms: 0 + -30 = -30
-12q + q2 = -30

The q term is -12q.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12q + 36 + q2 = -30 + 36

Reorder the terms:
36 + -12q + q2 = -30 + 36

Combine like terms: -30 + 36 = 6
36 + -12q + q2 = 6

Factor a perfect square on the left side:
(q + -6)(q + -6) = 6

Calculate the square root of the right side: 2.449489743

Break this problem into two subproblems by setting 
(q + -6) equal to 2.449489743 and -2.449489743.

Subproblem 1

q + -6 = 2.449489743 Simplifying q + -6 = 2.449489743 Reorder the terms: -6 + q = 2.449489743 Solving -6 + q = 2.449489743 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + q = 2.449489743 + 6 Combine like terms: -6 + 6 = 0 0 + q = 2.449489743 + 6 q = 2.449489743 + 6 Combine like terms: 2.449489743 + 6 = 8.449489743 q = 8.449489743 Simplifying q = 8.449489743

Subproblem 2

q + -6 = -2.449489743 Simplifying q + -6 = -2.449489743 Reorder the terms: -6 + q = -2.449489743 Solving -6 + q = -2.449489743 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + q = -2.449489743 + 6 Combine like terms: -6 + 6 = 0 0 + q = -2.449489743 + 6 q = -2.449489743 + 6 Combine like terms: -2.449489743 + 6 = 3.550510257 q = 3.550510257 Simplifying q = 3.550510257

Solution

The solution to the problem is based on the solutions from the subproblems. q = {8.449489743, 3.550510257}

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