x^2-14x-19=1

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Solution for x^2-14x-19=1 equation:


Simplifying
x2 + -14x + -19 = 1

Reorder the terms:
-19 + -14x + x2 = 1

Solving
-19 + -14x + x2 = 1

Solving for variable 'x'.

Reorder the terms:
-19 + -1 + -14x + x2 = 1 + -1

Combine like terms: -19 + -1 = -20
-20 + -14x + x2 = 1 + -1

Combine like terms: 1 + -1 = 0
-20 + -14x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '20' to each side of the equation.
-20 + -14x + 20 + x2 = 0 + 20

Reorder the terms:
-20 + 20 + -14x + x2 = 0 + 20

Combine like terms: -20 + 20 = 0
0 + -14x + x2 = 0 + 20
-14x + x2 = 0 + 20

Combine like terms: 0 + 20 = 20
-14x + x2 = 20

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 = 20 + 49

Reorder the terms:
49 + -14x + x2 = 20 + 49

Combine like terms: 20 + 49 = 69
49 + -14x + x2 = 69

Factor a perfect square on the left side:
(x + -7)(x + -7) = 69

Calculate the square root of the right side: 8.306623863

Break this problem into two subproblems by setting 
(x + -7) equal to 8.306623863 and -8.306623863.

Subproblem 1

x + -7 = 8.306623863 Simplifying x + -7 = 8.306623863 Reorder the terms: -7 + x = 8.306623863 Solving -7 + x = 8.306623863 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 = 8.306623863 + 7 Combine like terms: -7 + 7 = 0 0 + x = 8.306623863 + 7 x = 8.306623863 + 7 Combine like terms: 8.306623863 + 7 = 15.306623863 x = 15.306623863 Simplifying x = 15.306623863

Subproblem 2

x + -7 = -8.306623863 Simplifying x + -7 = -8.306623863 Reorder the terms: -7 + x = -8.306623863 Solving -7 + x = -8.306623863 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 = -8.306623863 + 7 Combine like terms: -7 + 7 = 0 0 + x = -8.306623863 + 7 x = -8.306623863 + 7 Combine like terms: -8.306623863 + 7 = -1.306623863 x = -1.306623863 Simplifying x = -1.306623863

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.306623863, -1.306623863}

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