x^2-12x-49=0

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Solution for x^2-12x-49=0 equation:


Simplifying
x2 + -12x + -49 = 0

Reorder the terms:
-49 + -12x + x2 = 0

Solving
-49 + -12x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '49' to each side of the equation.
-49 + -12x + 49 + x2 = 0 + 49

Reorder the terms:
-49 + 49 + -12x + x2 = 0 + 49

Combine like terms: -49 + 49 = 0
0 + -12x + x2 = 0 + 49
-12x + x2 = 0 + 49

Combine like terms: 0 + 49 = 49
-12x + x2 = 49

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 = 49 + 36

Reorder the terms:
36 + -12x + x2 = 49 + 36

Combine like terms: 49 + 36 = 85
36 + -12x + x2 = 85

Factor a perfect square on the left side:
(x + -6)(x + -6) = 85

Calculate the square root of the right side: 9.219544457

Break this problem into two subproblems by setting 
(x + -6) equal to 9.219544457 and -9.219544457.

Subproblem 1

x + -6 = 9.219544457 Simplifying x + -6 = 9.219544457 Reorder the terms: -6 + x = 9.219544457 Solving -6 + x = 9.219544457 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 = 9.219544457 + 6 Combine like terms: -6 + 6 = 0 0 + x = 9.219544457 + 6 x = 9.219544457 + 6 Combine like terms: 9.219544457 + 6 = 15.219544457 x = 15.219544457 Simplifying x = 15.219544457

Subproblem 2

x + -6 = -9.219544457 Simplifying x + -6 = -9.219544457 Reorder the terms: -6 + x = -9.219544457 Solving -6 + x = -9.219544457 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 = -9.219544457 + 6 Combine like terms: -6 + 6 = 0 0 + x = -9.219544457 + 6 x = -9.219544457 + 6 Combine like terms: -9.219544457 + 6 = -3.219544457 x = -3.219544457 Simplifying x = -3.219544457

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.219544457, -3.219544457}

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