(x+.5)(2x-0.33)=0

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Solution for (x+.5)(2x-0.33)=0 equation:


Simplifying
(x + 0.5)(2x + -0.33) = 0

Reorder the terms:
(0.5 + x)(2x + -0.33) = 0

Reorder the terms:
(0.5 + x)(-0.33 + 2x) = 0

Multiply (0.5 + x) * (-0.33 + 2x)
(0.5(-0.33 + 2x) + x(-0.33 + 2x)) = 0
((-0.33 * 0.5 + 2x * 0.5) + x(-0.33 + 2x)) = 0
((-0.165 + 1x) + x(-0.33 + 2x)) = 0
(-0.165 + 1x + (-0.33 * x + 2x * x)) = 0
(-0.165 + 1x + (-0.33x + 2x2)) = 0

Combine like terms: 1x + -0.33x = 0.67x
(-0.165 + 0.67x + 2x2) = 0

Solving
-0.165 + 0.67x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-0.0825 + 0.335x + x2 = 0

Move the constant term to the right:

Add '0.0825' to each side of the equation.
-0.0825 + 0.335x + 0.0825 + x2 = 0 + 0.0825

Reorder the terms:
-0.0825 + 0.0825 + 0.335x + x2 = 0 + 0.0825

Combine like terms: -0.0825 + 0.0825 = 0.0000
0.0000 + 0.335x + x2 = 0 + 0.0825
0.335x + x2 = 0 + 0.0825

Combine like terms: 0 + 0.0825 = 0.0825
0.335x + x2 = 0.0825

The x term is 0.335x.  Take half its coefficient (0.1675).
Square it (0.02805625) and add it to both sides.

Add '0.02805625' to each side of the equation.
0.335x + 0.02805625 + x2 = 0.0825 + 0.02805625

Reorder the terms:
0.02805625 + 0.335x + x2 = 0.0825 + 0.02805625

Combine like terms: 0.0825 + 0.02805625 = 0.11055625
0.02805625 + 0.335x + x2 = 0.11055625

Factor a perfect square on the left side:
(x + 0.1675)(x + 0.1675) = 0.11055625

Calculate the square root of the right side: 0.3325

Break this problem into two subproblems by setting 
(x + 0.1675) equal to 0.3325 and -0.3325.

Subproblem 1

x + 0.1675 = 0.3325 Simplifying x + 0.1675 = 0.3325 Reorder the terms: 0.1675 + x = 0.3325 Solving 0.1675 + x = 0.3325 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1675' to each side of the equation. 0.1675 + -0.1675 + x = 0.3325 + -0.1675 Combine like terms: 0.1675 + -0.1675 = 0.0000 0.0000 + x = 0.3325 + -0.1675 x = 0.3325 + -0.1675 Combine like terms: 0.3325 + -0.1675 = 0.165 x = 0.165 Simplifying x = 0.165

Subproblem 2

x + 0.1675 = -0.3325 Simplifying x + 0.1675 = -0.3325 Reorder the terms: 0.1675 + x = -0.3325 Solving 0.1675 + x = -0.3325 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1675' to each side of the equation. 0.1675 + -0.1675 + x = -0.3325 + -0.1675 Combine like terms: 0.1675 + -0.1675 = 0.0000 0.0000 + x = -0.3325 + -0.1675 x = -0.3325 + -0.1675 Combine like terms: -0.3325 + -0.1675 = -0.5 x = -0.5 Simplifying x = -0.5

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.165, -0.5}

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