0=2x(x+3)-2

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Solution for 0=2x(x+3)-2 equation:


Simplifying
0 = 2x(x + 3) + -2

Reorder the terms:
0 = 2x(3 + x) + -2
0 = (3 * 2x + x * 2x) + -2
0 = (6x + 2x2) + -2

Reorder the terms:
0 = -2 + 6x + 2x2

Solving
0 = -2 + 6x + 2x2

Solving for variable 'x'.

Combine like terms: 0 + 2 = 2
2 + -6x + -2x2 = -2 + 6x + 2x2 + 2 + -6x + -2x2

Reorder the terms:
2 + -6x + -2x2 = -2 + 2 + 6x + -6x + 2x2 + -2x2

Combine like terms: -2 + 2 = 0
2 + -6x + -2x2 = 0 + 6x + -6x + 2x2 + -2x2
2 + -6x + -2x2 = 6x + -6x + 2x2 + -2x2

Combine like terms: 6x + -6x = 0
2 + -6x + -2x2 = 0 + 2x2 + -2x2
2 + -6x + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
2 + -6x + -2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(1 + -3x + -1x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(1 + -3x + -1x2)' equal to zero and attempt to solve: Simplifying 1 + -3x + -1x2 = 0 Solving 1 + -3x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -1 + 3x + x2 = 0 Move the constant term to the right: Add '1' to each side of the equation. -1 + 3x + 1 + x2 = 0 + 1 Reorder the terms: -1 + 1 + 3x + x2 = 0 + 1 Combine like terms: -1 + 1 = 0 0 + 3x + x2 = 0 + 1 3x + x2 = 0 + 1 Combine like terms: 0 + 1 = 1 3x + x2 = 1 The x term is 3x. Take half its coefficient (1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. 3x + 2.25 + x2 = 1 + 2.25 Reorder the terms: 2.25 + 3x + x2 = 1 + 2.25 Combine like terms: 1 + 2.25 = 3.25 2.25 + 3x + x2 = 3.25 Factor a perfect square on the left side: (x + 1.5)(x + 1.5) = 3.25 Calculate the square root of the right side: 1.802775638 Break this problem into two subproblems by setting (x + 1.5) equal to 1.802775638 and -1.802775638.

Subproblem 1

x + 1.5 = 1.802775638 Simplifying x + 1.5 = 1.802775638 Reorder the terms: 1.5 + x = 1.802775638 Solving 1.5 + x = 1.802775638 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 1.802775638 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 1.802775638 + -1.5 x = 1.802775638 + -1.5 Combine like terms: 1.802775638 + -1.5 = 0.302775638 x = 0.302775638 Simplifying x = 0.302775638

Subproblem 2

x + 1.5 = -1.802775638 Simplifying x + 1.5 = -1.802775638 Reorder the terms: 1.5 + x = -1.802775638 Solving 1.5 + x = -1.802775638 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -1.802775638 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -1.802775638 + -1.5 x = -1.802775638 + -1.5 Combine like terms: -1.802775638 + -1.5 = -3.302775638 x = -3.302775638 Simplifying x = -3.302775638

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.302775638, -3.302775638}

Solution

x = {0.302775638, -3.302775638}

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