x^2+50x=15

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Solution for x^2+50x=15 equation:


Simplifying
x2 + 50x = 15

Reorder the terms:
50x + x2 = 15

Solving
50x + x2 = 15

Solving for variable 'x'.

Reorder the terms:
-15 + 50x + x2 = 15 + -15

Combine like terms: 15 + -15 = 0
-15 + 50x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '15' to each side of the equation.
-15 + 50x + 15 + x2 = 0 + 15

Reorder the terms:
-15 + 15 + 50x + x2 = 0 + 15

Combine like terms: -15 + 15 = 0
0 + 50x + x2 = 0 + 15
50x + x2 = 0 + 15

Combine like terms: 0 + 15 = 15
50x + x2 = 15

The x term is 50x.  Take half its coefficient (25).
Square it (625) and add it to both sides.

Add '625' to each side of the equation.
50x + 625 + x2 = 15 + 625

Reorder the terms:
625 + 50x + x2 = 15 + 625

Combine like terms: 15 + 625 = 640
625 + 50x + x2 = 640

Factor a perfect square on the left side:
(x + 25)(x + 25) = 640

Calculate the square root of the right side: 25.298221281

Break this problem into two subproblems by setting 
(x + 25) equal to 25.298221281 and -25.298221281.

Subproblem 1

x + 25 = 25.298221281 Simplifying x + 25 = 25.298221281 Reorder the terms: 25 + x = 25.298221281 Solving 25 + x = 25.298221281 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-25' to each side of the equation. 25 + -25 + x = 25.298221281 + -25 Combine like terms: 25 + -25 = 0 0 + x = 25.298221281 + -25 x = 25.298221281 + -25 Combine like terms: 25.298221281 + -25 = 0.298221281 x = 0.298221281 Simplifying x = 0.298221281

Subproblem 2

x + 25 = -25.298221281 Simplifying x + 25 = -25.298221281 Reorder the terms: 25 + x = -25.298221281 Solving 25 + x = -25.298221281 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-25' to each side of the equation. 25 + -25 + x = -25.298221281 + -25 Combine like terms: 25 + -25 = 0 0 + x = -25.298221281 + -25 x = -25.298221281 + -25 Combine like terms: -25.298221281 + -25 = -50.298221281 x = -50.298221281 Simplifying x = -50.298221281

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.298221281, -50.298221281}

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