=x^2+100x-2500

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Solution for =x^2+100x-2500 equation:


Simplifying
0 = x2 + 100x + -2500

Reorder the terms:
0 = -2500 + 100x + x2

Solving
0 = -2500 + 100x + x2

Solving for variable 'x'.

Combine like terms: 0 + 2500 = 2500
2500 + -100x + -1x2 = -2500 + 100x + x2 + 2500 + -100x + -1x2

Reorder the terms:
2500 + -100x + -1x2 = -2500 + 2500 + 100x + -100x + x2 + -1x2

Combine like terms: -2500 + 2500 = 0
2500 + -100x + -1x2 = 0 + 100x + -100x + x2 + -1x2
2500 + -100x + -1x2 = 100x + -100x + x2 + -1x2

Combine like terms: 100x + -100x = 0
2500 + -100x + -1x2 = 0 + x2 + -1x2
2500 + -100x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
2500 + -100x + -1x2 = 0

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

Divide each side by '-1'.
-2500 + 100x + x2 = 0

Move the constant term to the right:

Add '2500' to each side of the equation.
-2500 + 100x + 2500 + x2 = 0 + 2500

Reorder the terms:
-2500 + 2500 + 100x + x2 = 0 + 2500

Combine like terms: -2500 + 2500 = 0
0 + 100x + x2 = 0 + 2500
100x + x2 = 0 + 2500

Combine like terms: 0 + 2500 = 2500
100x + x2 = 2500

The x term is 100x.  Take half its coefficient (50).
Square it (2500) and add it to both sides.

Add '2500' to each side of the equation.
100x + 2500 + x2 = 2500 + 2500

Reorder the terms:
2500 + 100x + x2 = 2500 + 2500

Combine like terms: 2500 + 2500 = 5000
2500 + 100x + x2 = 5000

Factor a perfect square on the left side:
(x + 50)(x + 50) = 5000

Calculate the square root of the right side: 70.710678119

Break this problem into two subproblems by setting 
(x + 50) equal to 70.710678119 and -70.710678119.

Subproblem 1

x + 50 = 70.710678119 Simplifying x + 50 = 70.710678119 Reorder the terms: 50 + x = 70.710678119 Solving 50 + x = 70.710678119 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-50' to each side of the equation. 50 + -50 + x = 70.710678119 + -50 Combine like terms: 50 + -50 = 0 0 + x = 70.710678119 + -50 x = 70.710678119 + -50 Combine like terms: 70.710678119 + -50 = 20.710678119 x = 20.710678119 Simplifying x = 20.710678119

Subproblem 2

x + 50 = -70.710678119 Simplifying x + 50 = -70.710678119 Reorder the terms: 50 + x = -70.710678119 Solving 50 + x = -70.710678119 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-50' to each side of the equation. 50 + -50 + x = -70.710678119 + -50 Combine like terms: 50 + -50 = 0 0 + x = -70.710678119 + -50 x = -70.710678119 + -50 Combine like terms: -70.710678119 + -50 = -120.710678119 x = -120.710678119 Simplifying x = -120.710678119

Solution

The solution to the problem is based on the solutions from the subproblems. x = {20.710678119, -120.710678119}

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