66+12x=2x^2

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Solution for 66+12x=2x^2 equation:


Simplifying
66 + 12x = 2x2

Solving
66 + 12x = 2x2

Solving for variable 'x'.

Combine like terms: 2x2 + -2x2 = 0
66 + 12x + -2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(33 + 6x + -1x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(33 + 6x + -1x2)' equal to zero and attempt to solve: Simplifying 33 + 6x + -1x2 = 0 Solving 33 + 6x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -33 + -6x + x2 = 0 Move the constant term to the right: Add '33' to each side of the equation. -33 + -6x + 33 + x2 = 0 + 33 Reorder the terms: -33 + 33 + -6x + x2 = 0 + 33 Combine like terms: -33 + 33 = 0 0 + -6x + x2 = 0 + 33 -6x + x2 = 0 + 33 Combine like terms: 0 + 33 = 33 -6x + x2 = 33 The x term is -6x. Take half its coefficient (-3). Square it (9) and add it to both sides. Add '9' to each side of the equation. -6x + 9 + x2 = 33 + 9 Reorder the terms: 9 + -6x + x2 = 33 + 9 Combine like terms: 33 + 9 = 42 9 + -6x + x2 = 42 Factor a perfect square on the left side: (x + -3)(x + -3) = 42 Calculate the square root of the right side: 6.480740698 Break this problem into two subproblems by setting (x + -3) equal to 6.480740698 and -6.480740698.

Subproblem 1

x + -3 = 6.480740698 Simplifying x + -3 = 6.480740698 Reorder the terms: -3 + x = 6.480740698 Solving -3 + x = 6.480740698 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 6.480740698 + 3 Combine like terms: -3 + 3 = 0 0 + x = 6.480740698 + 3 x = 6.480740698 + 3 Combine like terms: 6.480740698 + 3 = 9.480740698 x = 9.480740698 Simplifying x = 9.480740698

Subproblem 2

x + -3 = -6.480740698 Simplifying x + -3 = -6.480740698 Reorder the terms: -3 + x = -6.480740698 Solving -3 + x = -6.480740698 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -6.480740698 + 3 Combine like terms: -3 + 3 = 0 0 + x = -6.480740698 + 3 x = -6.480740698 + 3 Combine like terms: -6.480740698 + 3 = -3.480740698 x = -3.480740698 Simplifying x = -3.480740698

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.480740698, -3.480740698}

Solution

x = {9.480740698, -3.480740698}

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