x^2+12x-270=0

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Solution for x^2+12x-270=0 equation:


Simplifying
x2 + 12x + -270 = 0

Reorder the terms:
-270 + 12x + x2 = 0

Solving
-270 + 12x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '270' to each side of the equation.
-270 + 12x + 270 + x2 = 0 + 270

Reorder the terms:
-270 + 270 + 12x + x2 = 0 + 270

Combine like terms: -270 + 270 = 0
0 + 12x + x2 = 0 + 270
12x + x2 = 0 + 270

Combine like terms: 0 + 270 = 270
12x + x2 = 270

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 = 270 + 36

Reorder the terms:
36 + 12x + x2 = 270 + 36

Combine like terms: 270 + 36 = 306
36 + 12x + x2 = 306

Factor a perfect square on the left side:
(x + 6)(x + 6) = 306

Calculate the square root of the right side: 17.492855685

Break this problem into two subproblems by setting 
(x + 6) equal to 17.492855685 and -17.492855685.

Subproblem 1

x + 6 = 17.492855685 Simplifying x + 6 = 17.492855685 Reorder the terms: 6 + x = 17.492855685 Solving 6 + x = 17.492855685 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 = 17.492855685 + -6 Combine like terms: 6 + -6 = 0 0 + x = 17.492855685 + -6 x = 17.492855685 + -6 Combine like terms: 17.492855685 + -6 = 11.492855685 x = 11.492855685 Simplifying x = 11.492855685

Subproblem 2

x + 6 = -17.492855685 Simplifying x + 6 = -17.492855685 Reorder the terms: 6 + x = -17.492855685 Solving 6 + x = -17.492855685 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 = -17.492855685 + -6 Combine like terms: 6 + -6 = 0 0 + x = -17.492855685 + -6 x = -17.492855685 + -6 Combine like terms: -17.492855685 + -6 = -23.492855685 x = -23.492855685 Simplifying x = -23.492855685

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.492855685, -23.492855685}

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