x^2+14x-75=0

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Solution for x^2+14x-75=0 equation:


Simplifying
x2 + 14x + -75 = 0

Reorder the terms:
-75 + 14x + x2 = 0

Solving
-75 + 14x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '75' to each side of the equation.
-75 + 14x + 75 + x2 = 0 + 75

Reorder the terms:
-75 + 75 + 14x + x2 = 0 + 75

Combine like terms: -75 + 75 = 0
0 + 14x + x2 = 0 + 75
14x + x2 = 0 + 75

Combine like terms: 0 + 75 = 75
14x + x2 = 75

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 = 75 + 49

Reorder the terms:
49 + 14x + x2 = 75 + 49

Combine like terms: 75 + 49 = 124
49 + 14x + x2 = 124

Factor a perfect square on the left side:
(x + 7)(x + 7) = 124

Calculate the square root of the right side: 11.135528726

Break this problem into two subproblems by setting 
(x + 7) equal to 11.135528726 and -11.135528726.

Subproblem 1

x + 7 = 11.135528726 Simplifying x + 7 = 11.135528726 Reorder the terms: 7 + x = 11.135528726 Solving 7 + x = 11.135528726 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 = 11.135528726 + -7 Combine like terms: 7 + -7 = 0 0 + x = 11.135528726 + -7 x = 11.135528726 + -7 Combine like terms: 11.135528726 + -7 = 4.135528726 x = 4.135528726 Simplifying x = 4.135528726

Subproblem 2

x + 7 = -11.135528726 Simplifying x + 7 = -11.135528726 Reorder the terms: 7 + x = -11.135528726 Solving 7 + x = -11.135528726 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 = -11.135528726 + -7 Combine like terms: 7 + -7 = 0 0 + x = -11.135528726 + -7 x = -11.135528726 + -7 Combine like terms: -11.135528726 + -7 = -18.135528726 x = -18.135528726 Simplifying x = -18.135528726

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.135528726, -18.135528726}

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