x^2+x-7=234

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Solution for x^2+x-7=234 equation:


Simplifying
x2 + x + -7 = 234

Reorder the terms:
-7 + x + x2 = 234

Solving
-7 + x + x2 = 234

Solving for variable 'x'.

Reorder the terms:
-7 + -234 + x + x2 = 234 + -234

Combine like terms: -7 + -234 = -241
-241 + x + x2 = 234 + -234

Combine like terms: 234 + -234 = 0
-241 + x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '241' to each side of the equation.
-241 + x + 241 + x2 = 0 + 241

Reorder the terms:
-241 + 241 + x + x2 = 0 + 241

Combine like terms: -241 + 241 = 0
0 + x + x2 = 0 + 241
x + x2 = 0 + 241

Combine like terms: 0 + 241 = 241
x + x2 = 241

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
x + 0.25 + x2 = 241 + 0.25

Reorder the terms:
0.25 + x + x2 = 241 + 0.25

Combine like terms: 241 + 0.25 = 241.25
0.25 + x + x2 = 241.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 241.25

Calculate the square root of the right side: 15.532224567

Break this problem into two subproblems by setting 
(x + 0.5) equal to 15.532224567 and -15.532224567.

Subproblem 1

x + 0.5 = 15.532224567 Simplifying x + 0.5 = 15.532224567 Reorder the terms: 0.5 + x = 15.532224567 Solving 0.5 + x = 15.532224567 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 15.532224567 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 15.532224567 + -0.5 x = 15.532224567 + -0.5 Combine like terms: 15.532224567 + -0.5 = 15.032224567 x = 15.032224567 Simplifying x = 15.032224567

Subproblem 2

x + 0.5 = -15.532224567 Simplifying x + 0.5 = -15.532224567 Reorder the terms: 0.5 + x = -15.532224567 Solving 0.5 + x = -15.532224567 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -15.532224567 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -15.532224567 + -0.5 x = -15.532224567 + -0.5 Combine like terms: -15.532224567 + -0.5 = -16.032224567 x = -16.032224567 Simplifying x = -16.032224567

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.032224567, -16.032224567}

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