x^2-14x-49=4

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Solution for x^2-14x-49=4 equation:


Simplifying
x2 + -14x + -49 = 4

Reorder the terms:
-49 + -14x + x2 = 4

Solving
-49 + -14x + x2 = 4

Solving for variable 'x'.

Reorder the terms:
-49 + -4 + -14x + x2 = 4 + -4

Combine like terms: -49 + -4 = -53
-53 + -14x + x2 = 4 + -4

Combine like terms: 4 + -4 = 0
-53 + -14x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '53' to each side of the equation.
-53 + -14x + 53 + x2 = 0 + 53

Reorder the terms:
-53 + 53 + -14x + x2 = 0 + 53

Combine like terms: -53 + 53 = 0
0 + -14x + x2 = 0 + 53
-14x + x2 = 0 + 53

Combine like terms: 0 + 53 = 53
-14x + x2 = 53

The x term is -14x.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14x + 49 + x2 = 53 + 49

Reorder the terms:
49 + -14x + x2 = 53 + 49

Combine like terms: 53 + 49 = 102
49 + -14x + x2 = 102

Factor a perfect square on the left side:
(x + -7)(x + -7) = 102

Calculate the square root of the right side: 10.099504938

Break this problem into two subproblems by setting 
(x + -7) equal to 10.099504938 and -10.099504938.

Subproblem 1

x + -7 = 10.099504938 Simplifying x + -7 = 10.099504938 Reorder the terms: -7 + x = 10.099504938 Solving -7 + x = 10.099504938 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = 10.099504938 + 7 Combine like terms: -7 + 7 = 0 0 + x = 10.099504938 + 7 x = 10.099504938 + 7 Combine like terms: 10.099504938 + 7 = 17.099504938 x = 17.099504938 Simplifying x = 17.099504938

Subproblem 2

x + -7 = -10.099504938 Simplifying x + -7 = -10.099504938 Reorder the terms: -7 + x = -10.099504938 Solving -7 + x = -10.099504938 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + x = -10.099504938 + 7 Combine like terms: -7 + 7 = 0 0 + x = -10.099504938 + 7 x = -10.099504938 + 7 Combine like terms: -10.099504938 + 7 = -3.099504938 x = -3.099504938 Simplifying x = -3.099504938

Solution

The solution to the problem is based on the solutions from the subproblems. x = {17.099504938, -3.099504938}

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