-3Q^2+12Q+2=0

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Solution for -3Q^2+12Q+2=0 equation:


Simplifying
-3Q2 + 12Q + 2 = 0

Reorder the terms:
2 + 12Q + -3Q2 = 0

Solving
2 + 12Q + -3Q2 = 0

Solving for variable 'Q'.

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
-0.6666666667 + -4Q + Q2 = 0

Move the constant term to the right:

Add '0.6666666667' to each side of the equation.
-0.6666666667 + -4Q + 0.6666666667 + Q2 = 0 + 0.6666666667

Reorder the terms:
-0.6666666667 + 0.6666666667 + -4Q + Q2 = 0 + 0.6666666667

Combine like terms: -0.6666666667 + 0.6666666667 = 0.0000000000
0.0000000000 + -4Q + Q2 = 0 + 0.6666666667
-4Q + Q2 = 0 + 0.6666666667

Combine like terms: 0 + 0.6666666667 = 0.6666666667
-4Q + Q2 = 0.6666666667

The Q term is -4Q.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4Q + 4 + Q2 = 0.6666666667 + 4

Reorder the terms:
4 + -4Q + Q2 = 0.6666666667 + 4

Combine like terms: 0.6666666667 + 4 = 4.6666666667
4 + -4Q + Q2 = 4.6666666667

Factor a perfect square on the left side:
(Q + -2)(Q + -2) = 4.6666666667

Calculate the square root of the right side: 2.160246899

Break this problem into two subproblems by setting 
(Q + -2) equal to 2.160246899 and -2.160246899.

Subproblem 1

Q + -2 = 2.160246899 Simplifying Q + -2 = 2.160246899 Reorder the terms: -2 + Q = 2.160246899 Solving -2 + Q = 2.160246899 Solving for variable 'Q'. Move all terms containing Q to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + Q = 2.160246899 + 2 Combine like terms: -2 + 2 = 0 0 + Q = 2.160246899 + 2 Q = 2.160246899 + 2 Combine like terms: 2.160246899 + 2 = 4.160246899 Q = 4.160246899 Simplifying Q = 4.160246899

Subproblem 2

Q + -2 = -2.160246899 Simplifying Q + -2 = -2.160246899 Reorder the terms: -2 + Q = -2.160246899 Solving -2 + Q = -2.160246899 Solving for variable 'Q'. Move all terms containing Q to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + Q = -2.160246899 + 2 Combine like terms: -2 + 2 = 0 0 + Q = -2.160246899 + 2 Q = -2.160246899 + 2 Combine like terms: -2.160246899 + 2 = -0.160246899 Q = -0.160246899 Simplifying Q = -0.160246899

Solution

The solution to the problem is based on the solutions from the subproblems. Q = {4.160246899, -0.160246899}

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