-x^2-16=12x

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Solution for -x^2-16=12x equation:


Simplifying
-1x2 + -16 = 12x

Reorder the terms:
-16 + -1x2 = 12x

Solving
-16 + -1x2 = 12x

Solving for variable 'x'.

Reorder the terms:
-16 + -12x + -1x2 = 12x + -12x

Combine like terms: 12x + -12x = 0
-16 + -12x + -1x2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(16 + 12x + x2) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(16 + 12x + x2)' equal to zero and attempt to solve: Simplifying 16 + 12x + x2 = 0 Solving 16 + 12x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-16' to each side of the equation. 16 + 12x + -16 + x2 = 0 + -16 Reorder the terms: 16 + -16 + 12x + x2 = 0 + -16 Combine like terms: 16 + -16 = 0 0 + 12x + x2 = 0 + -16 12x + x2 = 0 + -16 Combine like terms: 0 + -16 = -16 12x + x2 = -16 The x term is 12x. Take half its coefficient (6). Square it (36) and add it to both sides. Add '36' to each side of the equation. 12x + 36 + x2 = -16 + 36 Reorder the terms: 36 + 12x + x2 = -16 + 36 Combine like terms: -16 + 36 = 20 36 + 12x + x2 = 20 Factor a perfect square on the left side: (x + 6)(x + 6) = 20 Calculate the square root of the right side: 4.472135955 Break this problem into two subproblems by setting (x + 6) equal to 4.472135955 and -4.472135955.

Subproblem 1

x + 6 = 4.472135955 Simplifying x + 6 = 4.472135955 Reorder the terms: 6 + x = 4.472135955 Solving 6 + x = 4.472135955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 4.472135955 + -6 Combine like terms: 6 + -6 = 0 0 + x = 4.472135955 + -6 x = 4.472135955 + -6 Combine like terms: 4.472135955 + -6 = -1.527864045 x = -1.527864045 Simplifying x = -1.527864045

Subproblem 2

x + 6 = -4.472135955 Simplifying x + 6 = -4.472135955 Reorder the terms: 6 + x = -4.472135955 Solving 6 + x = -4.472135955 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = -4.472135955 + -6 Combine like terms: 6 + -6 = 0 0 + x = -4.472135955 + -6 x = -4.472135955 + -6 Combine like terms: -4.472135955 + -6 = -10.472135955 x = -10.472135955 Simplifying x = -10.472135955

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.527864045, -10.472135955}

Solution

x = {-1.527864045, -10.472135955}

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