9x^2-x=2000

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Solution for 9x^2-x=2000 equation:


Simplifying
9x2 + -1x = 2000

Reorder the terms:
-1x + 9x2 = 2000

Solving
-1x + 9x2 = 2000

Solving for variable 'x'.

Reorder the terms:
-2000 + -1x + 9x2 = 2000 + -2000

Combine like terms: 2000 + -2000 = 0
-2000 + -1x + 9x2 = 0

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

Divide each side by '9'.
-222.2222222 + -0.1111111111x + x2 = 0

Move the constant term to the right:

Add '222.2222222' to each side of the equation.
-222.2222222 + -0.1111111111x + 222.2222222 + x2 = 0 + 222.2222222

Reorder the terms:
-222.2222222 + 222.2222222 + -0.1111111111x + x2 = 0 + 222.2222222

Combine like terms: -222.2222222 + 222.2222222 = 0.0000000
0.0000000 + -0.1111111111x + x2 = 0 + 222.2222222
-0.1111111111x + x2 = 0 + 222.2222222

Combine like terms: 0 + 222.2222222 = 222.2222222
-0.1111111111x + x2 = 222.2222222

The x term is -0.1111111111x.  Take half its coefficient (-0.05555555555).
Square it (0.003086419752) and add it to both sides.

Add '0.003086419752' to each side of the equation.
-0.1111111111x + 0.003086419752 + x2 = 222.2222222 + 0.003086419752

Reorder the terms:
0.003086419752 + -0.1111111111x + x2 = 222.2222222 + 0.003086419752

Combine like terms: 222.2222222 + 0.003086419752 = 222.225308619752
0.003086419752 + -0.1111111111x + x2 = 222.225308619752

Factor a perfect square on the left side:
(x + -0.05555555555)(x + -0.05555555555) = 222.225308619752

Calculate the square root of the right side: 14.907223371

Break this problem into two subproblems by setting 
(x + -0.05555555555) equal to 14.907223371 and -14.907223371.

Subproblem 1

x + -0.05555555555 = 14.907223371 Simplifying x + -0.05555555555 = 14.907223371 Reorder the terms: -0.05555555555 + x = 14.907223371 Solving -0.05555555555 + x = 14.907223371 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.05555555555' to each side of the equation. -0.05555555555 + 0.05555555555 + x = 14.907223371 + 0.05555555555 Combine like terms: -0.05555555555 + 0.05555555555 = 0.00000000000 0.00000000000 + x = 14.907223371 + 0.05555555555 x = 14.907223371 + 0.05555555555 Combine like terms: 14.907223371 + 0.05555555555 = 14.96277892655 x = 14.96277892655 Simplifying x = 14.96277892655

Subproblem 2

x + -0.05555555555 = -14.907223371 Simplifying x + -0.05555555555 = -14.907223371 Reorder the terms: -0.05555555555 + x = -14.907223371 Solving -0.05555555555 + x = -14.907223371 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.05555555555' to each side of the equation. -0.05555555555 + 0.05555555555 + x = -14.907223371 + 0.05555555555 Combine like terms: -0.05555555555 + 0.05555555555 = 0.00000000000 0.00000000000 + x = -14.907223371 + 0.05555555555 x = -14.907223371 + 0.05555555555 Combine like terms: -14.907223371 + 0.05555555555 = -14.85166781545 x = -14.85166781545 Simplifying x = -14.85166781545

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.96277892655, -14.85166781545}

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