x^2+159x-2100=0

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Solution for x^2+159x-2100=0 equation:


Simplifying
x2 + 159x + -2100 = 0

Reorder the terms:
-2100 + 159x + x2 = 0

Solving
-2100 + 159x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '2100' to each side of the equation.
-2100 + 159x + 2100 + x2 = 0 + 2100

Reorder the terms:
-2100 + 2100 + 159x + x2 = 0 + 2100

Combine like terms: -2100 + 2100 = 0
0 + 159x + x2 = 0 + 2100
159x + x2 = 0 + 2100

Combine like terms: 0 + 2100 = 2100
159x + x2 = 2100

The x term is 159x.  Take half its coefficient (79.5).
Square it (6320.25) and add it to both sides.

Add '6320.25' to each side of the equation.
159x + 6320.25 + x2 = 2100 + 6320.25

Reorder the terms:
6320.25 + 159x + x2 = 2100 + 6320.25

Combine like terms: 2100 + 6320.25 = 8420.25
6320.25 + 159x + x2 = 8420.25

Factor a perfect square on the left side:
(x + 79.5)(x + 79.5) = 8420.25

Calculate the square root of the right side: 91.761920207

Break this problem into two subproblems by setting 
(x + 79.5) equal to 91.761920207 and -91.761920207.

Subproblem 1

x + 79.5 = 91.761920207 Simplifying x + 79.5 = 91.761920207 Reorder the terms: 79.5 + x = 91.761920207 Solving 79.5 + x = 91.761920207 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-79.5' to each side of the equation. 79.5 + -79.5 + x = 91.761920207 + -79.5 Combine like terms: 79.5 + -79.5 = 0.0 0.0 + x = 91.761920207 + -79.5 x = 91.761920207 + -79.5 Combine like terms: 91.761920207 + -79.5 = 12.261920207 x = 12.261920207 Simplifying x = 12.261920207

Subproblem 2

x + 79.5 = -91.761920207 Simplifying x + 79.5 = -91.761920207 Reorder the terms: 79.5 + x = -91.761920207 Solving 79.5 + x = -91.761920207 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-79.5' to each side of the equation. 79.5 + -79.5 + x = -91.761920207 + -79.5 Combine like terms: 79.5 + -79.5 = 0.0 0.0 + x = -91.761920207 + -79.5 x = -91.761920207 + -79.5 Combine like terms: -91.761920207 + -79.5 = -171.261920207 x = -171.261920207 Simplifying x = -171.261920207

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.261920207, -171.261920207}

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