x^2+14x=10

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Solution for x^2+14x=10 equation:


Simplifying
x2 + 14x = 10

Reorder the terms:
14x + x2 = 10

Solving
14x + x2 = 10

Solving for variable 'x'.

Reorder the terms:
-10 + 14x + x2 = 10 + -10

Combine like terms: 10 + -10 = 0
-10 + 14x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + 14x + 10 + x2 = 0 + 10

Reorder the terms:
-10 + 10 + 14x + x2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + 14x + x2 = 0 + 10
14x + x2 = 0 + 10

Combine like terms: 0 + 10 = 10
14x + x2 = 10

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 = 10 + 49

Reorder the terms:
49 + 14x + x2 = 10 + 49

Combine like terms: 10 + 49 = 59
49 + 14x + x2 = 59

Factor a perfect square on the left side:
(x + 7)(x + 7) = 59

Calculate the square root of the right side: 7.681145748

Break this problem into two subproblems by setting 
(x + 7) equal to 7.681145748 and -7.681145748.

Subproblem 1

x + 7 = 7.681145748 Simplifying x + 7 = 7.681145748 Reorder the terms: 7 + x = 7.681145748 Solving 7 + x = 7.681145748 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 = 7.681145748 + -7 Combine like terms: 7 + -7 = 0 0 + x = 7.681145748 + -7 x = 7.681145748 + -7 Combine like terms: 7.681145748 + -7 = 0.681145748 x = 0.681145748 Simplifying x = 0.681145748

Subproblem 2

x + 7 = -7.681145748 Simplifying x + 7 = -7.681145748 Reorder the terms: 7 + x = -7.681145748 Solving 7 + x = -7.681145748 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 = -7.681145748 + -7 Combine like terms: 7 + -7 = 0 0 + x = -7.681145748 + -7 x = -7.681145748 + -7 Combine like terms: -7.681145748 + -7 = -14.681145748 x = -14.681145748 Simplifying x = -14.681145748

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.681145748, -14.681145748}

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