x^2+4x-325=0

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Solution for x^2+4x-325=0 equation:


Simplifying
x2 + 4x + -325 = 0

Reorder the terms:
-325 + 4x + x2 = 0

Solving
-325 + 4x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '325' to each side of the equation.
-325 + 4x + 325 + x2 = 0 + 325

Reorder the terms:
-325 + 325 + 4x + x2 = 0 + 325

Combine like terms: -325 + 325 = 0
0 + 4x + x2 = 0 + 325
4x + x2 = 0 + 325

Combine like terms: 0 + 325 = 325
4x + x2 = 325

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 = 325 + 4

Reorder the terms:
4 + 4x + x2 = 325 + 4

Combine like terms: 325 + 4 = 329
4 + 4x + x2 = 329

Factor a perfect square on the left side:
(x + 2)(x + 2) = 329

Calculate the square root of the right side: 18.138357147

Break this problem into two subproblems by setting 
(x + 2) equal to 18.138357147 and -18.138357147.

Subproblem 1

x + 2 = 18.138357147 Simplifying x + 2 = 18.138357147 Reorder the terms: 2 + x = 18.138357147 Solving 2 + x = 18.138357147 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 = 18.138357147 + -2 Combine like terms: 2 + -2 = 0 0 + x = 18.138357147 + -2 x = 18.138357147 + -2 Combine like terms: 18.138357147 + -2 = 16.138357147 x = 16.138357147 Simplifying x = 16.138357147

Subproblem 2

x + 2 = -18.138357147 Simplifying x + 2 = -18.138357147 Reorder the terms: 2 + x = -18.138357147 Solving 2 + x = -18.138357147 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 = -18.138357147 + -2 Combine like terms: 2 + -2 = 0 0 + x = -18.138357147 + -2 x = -18.138357147 + -2 Combine like terms: -18.138357147 + -2 = -20.138357147 x = -20.138357147 Simplifying x = -20.138357147

Solution

The solution to the problem is based on the solutions from the subproblems. x = {16.138357147, -20.138357147}

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