x^2+58x-448=0

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Solution for x^2+58x-448=0 equation:


Simplifying
x2 + 58x + -448 = 0

Reorder the terms:
-448 + 58x + x2 = 0

Solving
-448 + 58x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '448' to each side of the equation.
-448 + 58x + 448 + x2 = 0 + 448

Reorder the terms:
-448 + 448 + 58x + x2 = 0 + 448

Combine like terms: -448 + 448 = 0
0 + 58x + x2 = 0 + 448
58x + x2 = 0 + 448

Combine like terms: 0 + 448 = 448
58x + x2 = 448

The x term is 58x.  Take half its coefficient (29).
Square it (841) and add it to both sides.

Add '841' to each side of the equation.
58x + 841 + x2 = 448 + 841

Reorder the terms:
841 + 58x + x2 = 448 + 841

Combine like terms: 448 + 841 = 1289
841 + 58x + x2 = 1289

Factor a perfect square on the left side:
(x + 29)(x + 29) = 1289

Calculate the square root of the right side: 35.902646142

Break this problem into two subproblems by setting 
(x + 29) equal to 35.902646142 and -35.902646142.

Subproblem 1

x + 29 = 35.902646142 Simplifying x + 29 = 35.902646142 Reorder the terms: 29 + x = 35.902646142 Solving 29 + x = 35.902646142 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-29' to each side of the equation. 29 + -29 + x = 35.902646142 + -29 Combine like terms: 29 + -29 = 0 0 + x = 35.902646142 + -29 x = 35.902646142 + -29 Combine like terms: 35.902646142 + -29 = 6.902646142 x = 6.902646142 Simplifying x = 6.902646142

Subproblem 2

x + 29 = -35.902646142 Simplifying x + 29 = -35.902646142 Reorder the terms: 29 + x = -35.902646142 Solving 29 + x = -35.902646142 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-29' to each side of the equation. 29 + -29 + x = -35.902646142 + -29 Combine like terms: 29 + -29 = 0 0 + x = -35.902646142 + -29 x = -35.902646142 + -29 Combine like terms: -35.902646142 + -29 = -64.902646142 x = -64.902646142 Simplifying x = -64.902646142

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.902646142, -64.902646142}

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