1.5x^2+x+20000=120000

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Solution for 1.5x^2+x+20000=120000 equation:


Simplifying
1.5x2 + x + 20000 = 120000

Reorder the terms:
20000 + x + 1.5x2 = 120000

Solving
20000 + x + 1.5x2 = 120000

Solving for variable 'x'.

Reorder the terms:
20000 + -120000 + x + 1.5x2 = 120000 + -120000

Combine like terms: 20000 + -120000 = -100000
-100000 + x + 1.5x2 = 120000 + -120000

Combine like terms: 120000 + -120000 = 0
-100000 + x + 1.5x2 = 0

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

Divide each side by '1.5'.
-66666.66667 + 0.6666666667x + x2 = 0

Move the constant term to the right:

Add '66666.66667' to each side of the equation.
-66666.66667 + 0.6666666667x + 66666.66667 + x2 = 0 + 66666.66667

Reorder the terms:
-66666.66667 + 66666.66667 + 0.6666666667x + x2 = 0 + 66666.66667

Combine like terms: -66666.66667 + 66666.66667 = 0.00000
0.00000 + 0.6666666667x + x2 = 0 + 66666.66667
0.6666666667x + x2 = 0 + 66666.66667

Combine like terms: 0 + 66666.66667 = 66666.66667
0.6666666667x + x2 = 66666.66667

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.6666666667x + 0.25 + x2 = 66666.66667 + 0.25

Reorder the terms:
0.25 + 0.6666666667x + x2 = 66666.66667 + 0.25

Combine like terms: 66666.66667 + 0.25 = 66666.91667
0.25 + 0.6666666667x + x2 = 66666.91667

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 66666.91667

Calculate the square root of the right side: 258.199373876

Break this problem into two subproblems by setting 
(x + 0.5) equal to 258.199373876 and -258.199373876.

Subproblem 1

x + 0.5 = 258.199373876 Simplifying x + 0.5 = 258.199373876 Reorder the terms: 0.5 + x = 258.199373876 Solving 0.5 + x = 258.199373876 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 258.199373876 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 258.199373876 + -0.5 x = 258.199373876 + -0.5 Combine like terms: 258.199373876 + -0.5 = 257.699373876 x = 257.699373876 Simplifying x = 257.699373876

Subproblem 2

x + 0.5 = -258.199373876 Simplifying x + 0.5 = -258.199373876 Reorder the terms: 0.5 + x = -258.199373876 Solving 0.5 + x = -258.199373876 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -258.199373876 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -258.199373876 + -0.5 x = -258.199373876 + -0.5 Combine like terms: -258.199373876 + -0.5 = -258.699373876 x = -258.699373876 Simplifying x = -258.699373876

Solution

The solution to the problem is based on the solutions from the subproblems. x = {257.699373876, -258.699373876}

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