(3x-6)(x+0.33)=

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Solution for (3x-6)(x+0.33)= equation:


Simplifying
(3x + -6)(x + 0.33) = 0

Reorder the terms:
(-6 + 3x)(x + 0.33) = 0

Reorder the terms:
(-6 + 3x)(0.33 + x) = 0

Multiply (-6 + 3x) * (0.33 + x)
(-6(0.33 + x) + 3x * (0.33 + x)) = 0
((0.33 * -6 + x * -6) + 3x * (0.33 + x)) = 0
((-1.98 + -6x) + 3x * (0.33 + x)) = 0
(-1.98 + -6x + (0.33 * 3x + x * 3x)) = 0
(-1.98 + -6x + (0.99x + 3x2)) = 0

Combine like terms: -6x + 0.99x = -5.01x
(-1.98 + -5.01x + 3x2) = 0

Solving
-1.98 + -5.01x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
-0.66 + -1.67x + x2 = 0

Move the constant term to the right:

Add '0.66' to each side of the equation.
-0.66 + -1.67x + 0.66 + x2 = 0 + 0.66

Reorder the terms:
-0.66 + 0.66 + -1.67x + x2 = 0 + 0.66

Combine like terms: -0.66 + 0.66 = 0.00
0.00 + -1.67x + x2 = 0 + 0.66
-1.67x + x2 = 0 + 0.66

Combine like terms: 0 + 0.66 = 0.66
-1.67x + x2 = 0.66

The x term is -1.67x.  Take half its coefficient (-0.835).
Square it (0.697225) and add it to both sides.

Add '0.697225' to each side of the equation.
-1.67x + 0.697225 + x2 = 0.66 + 0.697225

Reorder the terms:
0.697225 + -1.67x + x2 = 0.66 + 0.697225

Combine like terms: 0.66 + 0.697225 = 1.357225
0.697225 + -1.67x + x2 = 1.357225

Factor a perfect square on the left side:
(x + -0.835)(x + -0.835) = 1.357225

Calculate the square root of the right side: 1.165

Break this problem into two subproblems by setting 
(x + -0.835) equal to 1.165 and -1.165.

Subproblem 1

x + -0.835 = 1.165 Simplifying x + -0.835 = 1.165 Reorder the terms: -0.835 + x = 1.165 Solving -0.835 + x = 1.165 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.835' to each side of the equation. -0.835 + 0.835 + x = 1.165 + 0.835 Combine like terms: -0.835 + 0.835 = 0.000 0.000 + x = 1.165 + 0.835 x = 1.165 + 0.835 Combine like terms: 1.165 + 0.835 = 2 x = 2 Simplifying x = 2

Subproblem 2

x + -0.835 = -1.165 Simplifying x + -0.835 = -1.165 Reorder the terms: -0.835 + x = -1.165 Solving -0.835 + x = -1.165 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.835' to each side of the equation. -0.835 + 0.835 + x = -1.165 + 0.835 Combine like terms: -0.835 + 0.835 = 0.000 0.000 + x = -1.165 + 0.835 x = -1.165 + 0.835 Combine like terms: -1.165 + 0.835 = -0.33 x = -0.33 Simplifying x = -0.33

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2, -0.33}

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