x^2+2x-462=0

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Solution for x^2+2x-462=0 equation:


Simplifying
x2 + 2x + -462 = 0

Reorder the terms:
-462 + 2x + x2 = 0

Solving
-462 + 2x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '462' to each side of the equation.
-462 + 2x + 462 + x2 = 0 + 462

Reorder the terms:
-462 + 462 + 2x + x2 = 0 + 462

Combine like terms: -462 + 462 = 0
0 + 2x + x2 = 0 + 462
2x + x2 = 0 + 462

Combine like terms: 0 + 462 = 462
2x + x2 = 462

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 462 + 1

Reorder the terms:
1 + 2x + x2 = 462 + 1

Combine like terms: 462 + 1 = 463
1 + 2x + x2 = 463

Factor a perfect square on the left side:
(x + 1)(x + 1) = 463

Calculate the square root of the right side: 21.517434791

Break this problem into two subproblems by setting 
(x + 1) equal to 21.517434791 and -21.517434791.

Subproblem 1

x + 1 = 21.517434791 Simplifying x + 1 = 21.517434791 Reorder the terms: 1 + x = 21.517434791 Solving 1 + x = 21.517434791 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 21.517434791 + -1 Combine like terms: 1 + -1 = 0 0 + x = 21.517434791 + -1 x = 21.517434791 + -1 Combine like terms: 21.517434791 + -1 = 20.517434791 x = 20.517434791 Simplifying x = 20.517434791

Subproblem 2

x + 1 = -21.517434791 Simplifying x + 1 = -21.517434791 Reorder the terms: 1 + x = -21.517434791 Solving 1 + x = -21.517434791 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -21.517434791 + -1 Combine like terms: 1 + -1 = 0 0 + x = -21.517434791 + -1 x = -21.517434791 + -1 Combine like terms: -21.517434791 + -1 = -22.517434791 x = -22.517434791 Simplifying x = -22.517434791

Solution

The solution to the problem is based on the solutions from the subproblems. x = {20.517434791, -22.517434791}

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