12+q^2-30q=0

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


Simplifying
12 + q2 + -30q = 0

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

Solving
12 + -30q + q2 = 0

Solving for variable 'q'.

Begin completing the square.

Move the constant term to the right:

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

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

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

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

The q term is -30q.  Take half its coefficient (-15).
Square it (225) and add it to both sides.

Add '225' to each side of the equation.
-30q + 225 + q2 = -12 + 225

Reorder the terms:
225 + -30q + q2 = -12 + 225

Combine like terms: -12 + 225 = 213
225 + -30q + q2 = 213

Factor a perfect square on the left side:
(q + -15)(q + -15) = 213

Calculate the square root of the right side: 14.594519519

Break this problem into two subproblems by setting 
(q + -15) equal to 14.594519519 and -14.594519519.

Subproblem 1

q + -15 = 14.594519519 Simplifying q + -15 = 14.594519519 Reorder the terms: -15 + q = 14.594519519 Solving -15 + q = 14.594519519 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + q = 14.594519519 + 15 Combine like terms: -15 + 15 = 0 0 + q = 14.594519519 + 15 q = 14.594519519 + 15 Combine like terms: 14.594519519 + 15 = 29.594519519 q = 29.594519519 Simplifying q = 29.594519519

Subproblem 2

q + -15 = -14.594519519 Simplifying q + -15 = -14.594519519 Reorder the terms: -15 + q = -14.594519519 Solving -15 + q = -14.594519519 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + q = -14.594519519 + 15 Combine like terms: -15 + 15 = 0 0 + q = -14.594519519 + 15 q = -14.594519519 + 15 Combine like terms: -14.594519519 + 15 = 0.405480481 q = 0.405480481 Simplifying q = 0.405480481

Solution

The solution to the problem is based on the solutions from the subproblems. q = {29.594519519, 0.405480481}

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