0=x^2+25x-322

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Solution for 0=x^2+25x-322 equation:


Simplifying
0 = x2 + 25x + -322

Reorder the terms:
0 = -322 + 25x + x2

Solving
0 = -322 + 25x + x2

Solving for variable 'x'.

Combine like terms: 0 + 322 = 322
322 + -25x + -1x2 = -322 + 25x + x2 + 322 + -25x + -1x2

Reorder the terms:
322 + -25x + -1x2 = -322 + 322 + 25x + -25x + x2 + -1x2

Combine like terms: -322 + 322 = 0
322 + -25x + -1x2 = 0 + 25x + -25x + x2 + -1x2
322 + -25x + -1x2 = 25x + -25x + x2 + -1x2

Combine like terms: 25x + -25x = 0
322 + -25x + -1x2 = 0 + x2 + -1x2
322 + -25x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
322 + -25x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-322 + 25x + x2 = 0

Move the constant term to the right:

Add '322' to each side of the equation.
-322 + 25x + 322 + x2 = 0 + 322

Reorder the terms:
-322 + 322 + 25x + x2 = 0 + 322

Combine like terms: -322 + 322 = 0
0 + 25x + x2 = 0 + 322
25x + x2 = 0 + 322

Combine like terms: 0 + 322 = 322
25x + x2 = 322

The x term is 25x.  Take half its coefficient (12.5).
Square it (156.25) and add it to both sides.

Add '156.25' to each side of the equation.
25x + 156.25 + x2 = 322 + 156.25

Reorder the terms:
156.25 + 25x + x2 = 322 + 156.25

Combine like terms: 322 + 156.25 = 478.25
156.25 + 25x + x2 = 478.25

Factor a perfect square on the left side:
(x + 12.5)(x + 12.5) = 478.25

Calculate the square root of the right side: 21.868927729

Break this problem into two subproblems by setting 
(x + 12.5) equal to 21.868927729 and -21.868927729.

Subproblem 1

x + 12.5 = 21.868927729 Simplifying x + 12.5 = 21.868927729 Reorder the terms: 12.5 + x = 21.868927729 Solving 12.5 + x = 21.868927729 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12.5' to each side of the equation. 12.5 + -12.5 + x = 21.868927729 + -12.5 Combine like terms: 12.5 + -12.5 = 0.0 0.0 + x = 21.868927729 + -12.5 x = 21.868927729 + -12.5 Combine like terms: 21.868927729 + -12.5 = 9.368927729 x = 9.368927729 Simplifying x = 9.368927729

Subproblem 2

x + 12.5 = -21.868927729 Simplifying x + 12.5 = -21.868927729 Reorder the terms: 12.5 + x = -21.868927729 Solving 12.5 + x = -21.868927729 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12.5' to each side of the equation. 12.5 + -12.5 + x = -21.868927729 + -12.5 Combine like terms: 12.5 + -12.5 = 0.0 0.0 + x = -21.868927729 + -12.5 x = -21.868927729 + -12.5 Combine like terms: -21.868927729 + -12.5 = -34.368927729 x = -34.368927729 Simplifying x = -34.368927729

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.368927729, -34.368927729}

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