66000=3x^2+4x+2

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Solution for 66000=3x^2+4x+2 equation:


Simplifying
66000 = 3x2 + 4x + 2

Reorder the terms:
66000 = 2 + 4x + 3x2

Solving
66000 = 2 + 4x + 3x2

Solving for variable 'x'.

Combine like terms: 66000 + -2 = 65998
65998 + -4x + -3x2 = 2 + 4x + 3x2 + -2 + -4x + -3x2

Reorder the terms:
65998 + -4x + -3x2 = 2 + -2 + 4x + -4x + 3x2 + -3x2

Combine like terms: 2 + -2 = 0
65998 + -4x + -3x2 = 0 + 4x + -4x + 3x2 + -3x2
65998 + -4x + -3x2 = 4x + -4x + 3x2 + -3x2

Combine like terms: 4x + -4x = 0
65998 + -4x + -3x2 = 0 + 3x2 + -3x2
65998 + -4x + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
65998 + -4x + -3x2 = 0

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

Divide each side by '-3'.
-21999.33333 + 1.333333333x + x2 = 0

Move the constant term to the right:

Add '21999.33333' to each side of the equation.
-21999.33333 + 1.333333333x + 21999.33333 + x2 = 0 + 21999.33333

Reorder the terms:
-21999.33333 + 21999.33333 + 1.333333333x + x2 = 0 + 21999.33333

Combine like terms: -21999.33333 + 21999.33333 = 0.00000
0.00000 + 1.333333333x + x2 = 0 + 21999.33333
1.333333333x + x2 = 0 + 21999.33333

Combine like terms: 0 + 21999.33333 = 21999.33333
1.333333333x + x2 = 21999.33333

The x term is 1.333333333x.  Take half its coefficient (0.6666666665).
Square it (0.4444444442) and add it to both sides.

Add '0.4444444442' to each side of the equation.
1.333333333x + 0.4444444442 + x2 = 21999.33333 + 0.4444444442

Reorder the terms:
0.4444444442 + 1.333333333x + x2 = 21999.33333 + 0.4444444442

Combine like terms: 21999.33333 + 0.4444444442 = 21999.7777744442
0.4444444442 + 1.333333333x + x2 = 21999.7777744442

Factor a perfect square on the left side:
(x + 0.6666666665)(x + 0.6666666665) = 21999.7777744442

Calculate the square root of the right side: 148.323220618

Break this problem into two subproblems by setting 
(x + 0.6666666665) equal to 148.323220618 and -148.323220618.

Subproblem 1

x + 0.6666666665 = 148.323220618 Simplifying x + 0.6666666665 = 148.323220618 Reorder the terms: 0.6666666665 + x = 148.323220618 Solving 0.6666666665 + x = 148.323220618 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6666666665' to each side of the equation. 0.6666666665 + -0.6666666665 + x = 148.323220618 + -0.6666666665 Combine like terms: 0.6666666665 + -0.6666666665 = 0.0000000000 0.0000000000 + x = 148.323220618 + -0.6666666665 x = 148.323220618 + -0.6666666665 Combine like terms: 148.323220618 + -0.6666666665 = 147.6565539515 x = 147.6565539515 Simplifying x = 147.6565539515

Subproblem 2

x + 0.6666666665 = -148.323220618 Simplifying x + 0.6666666665 = -148.323220618 Reorder the terms: 0.6666666665 + x = -148.323220618 Solving 0.6666666665 + x = -148.323220618 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6666666665' to each side of the equation. 0.6666666665 + -0.6666666665 + x = -148.323220618 + -0.6666666665 Combine like terms: 0.6666666665 + -0.6666666665 = 0.0000000000 0.0000000000 + x = -148.323220618 + -0.6666666665 x = -148.323220618 + -0.6666666665 Combine like terms: -148.323220618 + -0.6666666665 = -148.9898872845 x = -148.9898872845 Simplifying x = -148.9898872845

Solution

The solution to the problem is based on the solutions from the subproblems. x = {147.6565539515, -148.9898872845}

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