-3x^2+228x-1000=18

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Solution for -3x^2+228x-1000=18 equation:


Simplifying
-3x2 + 228x + -1000 = 18

Reorder the terms:
-1000 + 228x + -3x2 = 18

Solving
-1000 + 228x + -3x2 = 18

Solving for variable 'x'.

Reorder the terms:
-1000 + -18 + 228x + -3x2 = 18 + -18

Combine like terms: -1000 + -18 = -1018
-1018 + 228x + -3x2 = 18 + -18

Combine like terms: 18 + -18 = 0
-1018 + 228x + -3x2 = 0

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

Divide each side by '-3'.
339.3333333 + -76x + x2 = 0

Move the constant term to the right:

Add '-339.3333333' to each side of the equation.
339.3333333 + -76x + -339.3333333 + x2 = 0 + -339.3333333

Reorder the terms:
339.3333333 + -339.3333333 + -76x + x2 = 0 + -339.3333333

Combine like terms: 339.3333333 + -339.3333333 = 0.0000000
0.0000000 + -76x + x2 = 0 + -339.3333333
-76x + x2 = 0 + -339.3333333

Combine like terms: 0 + -339.3333333 = -339.3333333
-76x + x2 = -339.3333333

The x term is -76x.  Take half its coefficient (-38).
Square it (1444) and add it to both sides.

Add '1444' to each side of the equation.
-76x + 1444 + x2 = -339.3333333 + 1444

Reorder the terms:
1444 + -76x + x2 = -339.3333333 + 1444

Combine like terms: -339.3333333 + 1444 = 1104.6666667
1444 + -76x + x2 = 1104.6666667

Factor a perfect square on the left side:
(x + -38)(x + -38) = 1104.6666667

Calculate the square root of the right side: 33.236526093

Break this problem into two subproblems by setting 
(x + -38) equal to 33.236526093 and -33.236526093.

Subproblem 1

x + -38 = 33.236526093 Simplifying x + -38 = 33.236526093 Reorder the terms: -38 + x = 33.236526093 Solving -38 + x = 33.236526093 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '38' to each side of the equation. -38 + 38 + x = 33.236526093 + 38 Combine like terms: -38 + 38 = 0 0 + x = 33.236526093 + 38 x = 33.236526093 + 38 Combine like terms: 33.236526093 + 38 = 71.236526093 x = 71.236526093 Simplifying x = 71.236526093

Subproblem 2

x + -38 = -33.236526093 Simplifying x + -38 = -33.236526093 Reorder the terms: -38 + x = -33.236526093 Solving -38 + x = -33.236526093 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '38' to each side of the equation. -38 + 38 + x = -33.236526093 + 38 Combine like terms: -38 + 38 = 0 0 + x = -33.236526093 + 38 x = -33.236526093 + 38 Combine like terms: -33.236526093 + 38 = 4.763473907 x = 4.763473907 Simplifying x = 4.763473907

Solution

The solution to the problem is based on the solutions from the subproblems. x = {71.236526093, 4.763473907}

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