x^2-14x-75=-8

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Solution for x^2-14x-75=-8 equation:


Simplifying
x2 + -14x + -75 = -8

Reorder the terms:
-75 + -14x + x2 = -8

Solving
-75 + -14x + x2 = -8

Solving for variable 'x'.

Reorder the terms:
-75 + 8 + -14x + x2 = -8 + 8

Combine like terms: -75 + 8 = -67
-67 + -14x + x2 = -8 + 8

Combine like terms: -8 + 8 = 0
-67 + -14x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '67' to each side of the equation.
-67 + -14x + 67 + x2 = 0 + 67

Reorder the terms:
-67 + 67 + -14x + x2 = 0 + 67

Combine like terms: -67 + 67 = 0
0 + -14x + x2 = 0 + 67
-14x + x2 = 0 + 67

Combine like terms: 0 + 67 = 67
-14x + x2 = 67

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 = 67 + 49

Reorder the terms:
49 + -14x + x2 = 67 + 49

Combine like terms: 67 + 49 = 116
49 + -14x + x2 = 116

Factor a perfect square on the left side:
(x + -7)(x + -7) = 116

Calculate the square root of the right side: 10.770329614

Break this problem into two subproblems by setting 
(x + -7) equal to 10.770329614 and -10.770329614.

Subproblem 1

x + -7 = 10.770329614 Simplifying x + -7 = 10.770329614 Reorder the terms: -7 + x = 10.770329614 Solving -7 + x = 10.770329614 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 = 10.770329614 + 7 Combine like terms: -7 + 7 = 0 0 + x = 10.770329614 + 7 x = 10.770329614 + 7 Combine like terms: 10.770329614 + 7 = 17.770329614 x = 17.770329614 Simplifying x = 17.770329614

Subproblem 2

x + -7 = -10.770329614 Simplifying x + -7 = -10.770329614 Reorder the terms: -7 + x = -10.770329614 Solving -7 + x = -10.770329614 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 = -10.770329614 + 7 Combine like terms: -7 + 7 = 0 0 + x = -10.770329614 + 7 x = -10.770329614 + 7 Combine like terms: -10.770329614 + 7 = -3.770329614 x = -3.770329614 Simplifying x = -3.770329614

Solution

The solution to the problem is based on the solutions from the subproblems. x = {17.770329614, -3.770329614}

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