14x+x^2=100

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Solution for 14x+x^2=100 equation:


Simplifying
14x + x2 = 100

Solving
14x + x2 = 100

Solving for variable 'x'.

Reorder the terms:
-100 + 14x + x2 = 100 + -100

Combine like terms: 100 + -100 = 0
-100 + 14x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '100' to each side of the equation.
-100 + 14x + 100 + x2 = 0 + 100

Reorder the terms:
-100 + 100 + 14x + x2 = 0 + 100

Combine like terms: -100 + 100 = 0
0 + 14x + x2 = 0 + 100
14x + x2 = 0 + 100

Combine like terms: 0 + 100 = 100
14x + x2 = 100

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 = 100 + 49

Reorder the terms:
49 + 14x + x2 = 100 + 49

Combine like terms: 100 + 49 = 149
49 + 14x + x2 = 149

Factor a perfect square on the left side:
(x + 7)(x + 7) = 149

Calculate the square root of the right side: 12.206555616

Break this problem into two subproblems by setting 
(x + 7) equal to 12.206555616 and -12.206555616.

Subproblem 1

x + 7 = 12.206555616 Simplifying x + 7 = 12.206555616 Reorder the terms: 7 + x = 12.206555616 Solving 7 + x = 12.206555616 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 = 12.206555616 + -7 Combine like terms: 7 + -7 = 0 0 + x = 12.206555616 + -7 x = 12.206555616 + -7 Combine like terms: 12.206555616 + -7 = 5.206555616 x = 5.206555616 Simplifying x = 5.206555616

Subproblem 2

x + 7 = -12.206555616 Simplifying x + 7 = -12.206555616 Reorder the terms: 7 + x = -12.206555616 Solving 7 + x = -12.206555616 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 = -12.206555616 + -7 Combine like terms: 7 + -7 = 0 0 + x = -12.206555616 + -7 x = -12.206555616 + -7 Combine like terms: -12.206555616 + -7 = -19.206555616 x = -19.206555616 Simplifying x = -19.206555616

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.206555616, -19.206555616}

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