3x^2+253x=120000

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Solution for 3x^2+253x=120000 equation:


Simplifying
3x2 + 253x = 120000

Reorder the terms:
253x + 3x2 = 120000

Solving
253x + 3x2 = 120000

Solving for variable 'x'.

Reorder the terms:
-120000 + 253x + 3x2 = 120000 + -120000

Combine like terms: 120000 + -120000 = 0
-120000 + 253x + 3x2 = 0

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

Divide each side by '3'.
-40000 + 84.33333333x + x2 = 0

Move the constant term to the right:

Add '40000' to each side of the equation.
-40000 + 84.33333333x + 40000 + x2 = 0 + 40000

Reorder the terms:
-40000 + 40000 + 84.33333333x + x2 = 0 + 40000

Combine like terms: -40000 + 40000 = 0
0 + 84.33333333x + x2 = 0 + 40000
84.33333333x + x2 = 0 + 40000

Combine like terms: 0 + 40000 = 40000
84.33333333x + x2 = 40000

The x term is 84.33333333x.  Take half its coefficient (42.16666667).
Square it (1778.027778) and add it to both sides.

Add '1778.027778' to each side of the equation.
84.33333333x + 1778.027778 + x2 = 40000 + 1778.027778

Reorder the terms:
1778.027778 + 84.33333333x + x2 = 40000 + 1778.027778

Combine like terms: 40000 + 1778.027778 = 41778.027778
1778.027778 + 84.33333333x + x2 = 41778.027778

Factor a perfect square on the left side:
(x + 42.16666667)(x + 42.16666667) = 41778.027778

Calculate the square root of the right side: 204.396741114

Break this problem into two subproblems by setting 
(x + 42.16666667) equal to 204.396741114 and -204.396741114.

Subproblem 1

x + 42.16666667 = 204.396741114 Simplifying x + 42.16666667 = 204.396741114 Reorder the terms: 42.16666667 + x = 204.396741114 Solving 42.16666667 + x = 204.396741114 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-42.16666667' to each side of the equation. 42.16666667 + -42.16666667 + x = 204.396741114 + -42.16666667 Combine like terms: 42.16666667 + -42.16666667 = 0.00000000 0.00000000 + x = 204.396741114 + -42.16666667 x = 204.396741114 + -42.16666667 Combine like terms: 204.396741114 + -42.16666667 = 162.230074444 x = 162.230074444 Simplifying x = 162.230074444

Subproblem 2

x + 42.16666667 = -204.396741114 Simplifying x + 42.16666667 = -204.396741114 Reorder the terms: 42.16666667 + x = -204.396741114 Solving 42.16666667 + x = -204.396741114 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-42.16666667' to each side of the equation. 42.16666667 + -42.16666667 + x = -204.396741114 + -42.16666667 Combine like terms: 42.16666667 + -42.16666667 = 0.00000000 0.00000000 + x = -204.396741114 + -42.16666667 x = -204.396741114 + -42.16666667 Combine like terms: -204.396741114 + -42.16666667 = -246.563407784 x = -246.563407784 Simplifying x = -246.563407784

Solution

The solution to the problem is based on the solutions from the subproblems. x = {162.230074444, -246.563407784}

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