x^2+4x-474=0

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Solution for x^2+4x-474=0 equation:


Simplifying
x2 + 4x + -474 = 0

Reorder the terms:
-474 + 4x + x2 = 0

Solving
-474 + 4x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '474' to each side of the equation.
-474 + 4x + 474 + x2 = 0 + 474

Reorder the terms:
-474 + 474 + 4x + x2 = 0 + 474

Combine like terms: -474 + 474 = 0
0 + 4x + x2 = 0 + 474
4x + x2 = 0 + 474

Combine like terms: 0 + 474 = 474
4x + x2 = 474

The x term is 4x.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4x + 4 + x2 = 474 + 4

Reorder the terms:
4 + 4x + x2 = 474 + 4

Combine like terms: 474 + 4 = 478
4 + 4x + x2 = 478

Factor a perfect square on the left side:
(x + 2)(x + 2) = 478

Calculate the square root of the right side: 21.863211109

Break this problem into two subproblems by setting 
(x + 2) equal to 21.863211109 and -21.863211109.

Subproblem 1

x + 2 = 21.863211109 Simplifying x + 2 = 21.863211109 Reorder the terms: 2 + x = 21.863211109 Solving 2 + x = 21.863211109 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 21.863211109 + -2 Combine like terms: 2 + -2 = 0 0 + x = 21.863211109 + -2 x = 21.863211109 + -2 Combine like terms: 21.863211109 + -2 = 19.863211109 x = 19.863211109 Simplifying x = 19.863211109

Subproblem 2

x + 2 = -21.863211109 Simplifying x + 2 = -21.863211109 Reorder the terms: 2 + x = -21.863211109 Solving 2 + x = -21.863211109 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -21.863211109 + -2 Combine like terms: 2 + -2 = 0 0 + x = -21.863211109 + -2 x = -21.863211109 + -2 Combine like terms: -21.863211109 + -2 = -23.863211109 x = -23.863211109 Simplifying x = -23.863211109

Solution

The solution to the problem is based on the solutions from the subproblems. x = {19.863211109, -23.863211109}

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