x^2+x=960

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Solution for x^2+x=960 equation:


Simplifying
x2 + x = 960

Reorder the terms:
x + x2 = 960

Solving
x + x2 = 960

Solving for variable 'x'.

Reorder the terms:
-960 + x + x2 = 960 + -960

Combine like terms: 960 + -960 = 0
-960 + x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '960' to each side of the equation.
-960 + x + 960 + x2 = 0 + 960

Reorder the terms:
-960 + 960 + x + x2 = 0 + 960

Combine like terms: -960 + 960 = 0
0 + x + x2 = 0 + 960
x + x2 = 0 + 960

Combine like terms: 0 + 960 = 960
x + x2 = 960

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 = 960 + 0.25

Reorder the terms:
0.25 + x + x2 = 960 + 0.25

Combine like terms: 960 + 0.25 = 960.25
0.25 + x + x2 = 960.25

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 960.25

Calculate the square root of the right side: 30.987900865

Break this problem into two subproblems by setting 
(x + 0.5) equal to 30.987900865 and -30.987900865.

Subproblem 1

x + 0.5 = 30.987900865 Simplifying x + 0.5 = 30.987900865 Reorder the terms: 0.5 + x = 30.987900865 Solving 0.5 + x = 30.987900865 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 = 30.987900865 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 30.987900865 + -0.5 x = 30.987900865 + -0.5 Combine like terms: 30.987900865 + -0.5 = 30.487900865 x = 30.487900865 Simplifying x = 30.487900865

Subproblem 2

x + 0.5 = -30.987900865 Simplifying x + 0.5 = -30.987900865 Reorder the terms: 0.5 + x = -30.987900865 Solving 0.5 + x = -30.987900865 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 = -30.987900865 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -30.987900865 + -0.5 x = -30.987900865 + -0.5 Combine like terms: -30.987900865 + -0.5 = -31.487900865 x = -31.487900865 Simplifying x = -31.487900865

Solution

The solution to the problem is based on the solutions from the subproblems. x = {30.487900865, -31.487900865}

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