(2)x^2+.6x-0.09=0

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Solution for (2)x^2+.6x-0.09=0 equation:


Simplifying
(2) * x2 + 0.6x + -0.09 = 0

Reorder the terms:
-0.09 + 0.6x + 2x2 = 0

Solving
-0.09 + 0.6x + 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'.
-0.045 + 0.3x + x2 = 0

Move the constant term to the right:

Add '0.045' to each side of the equation.
-0.045 + 0.3x + 0.045 + x2 = 0 + 0.045

Reorder the terms:
-0.045 + 0.045 + 0.3x + x2 = 0 + 0.045

Combine like terms: -0.045 + 0.045 = 0.000
0.000 + 0.3x + x2 = 0 + 0.045
0.3x + x2 = 0 + 0.045

Combine like terms: 0 + 0.045 = 0.045
0.3x + x2 = 0.045

The x term is 0.3x.  Take half its coefficient (0.15).
Square it (0.0225) and add it to both sides.

Add '0.0225' to each side of the equation.
0.3x + 0.0225 + x2 = 0.045 + 0.0225

Reorder the terms:
0.0225 + 0.3x + x2 = 0.045 + 0.0225

Combine like terms: 0.045 + 0.0225 = 0.0675
0.0225 + 0.3x + x2 = 0.0675

Factor a perfect square on the left side:
(x + 0.15)(x + 0.15) = 0.0675

Calculate the square root of the right side: 0.259807621

Break this problem into two subproblems by setting 
(x + 0.15) equal to 0.259807621 and -0.259807621.

Subproblem 1

x + 0.15 = 0.259807621 Simplifying x + 0.15 = 0.259807621 Reorder the terms: 0.15 + x = 0.259807621 Solving 0.15 + x = 0.259807621 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.15' to each side of the equation. 0.15 + -0.15 + x = 0.259807621 + -0.15 Combine like terms: 0.15 + -0.15 = 0.00 0.00 + x = 0.259807621 + -0.15 x = 0.259807621 + -0.15 Combine like terms: 0.259807621 + -0.15 = 0.109807621 x = 0.109807621 Simplifying x = 0.109807621

Subproblem 2

x + 0.15 = -0.259807621 Simplifying x + 0.15 = -0.259807621 Reorder the terms: 0.15 + x = -0.259807621 Solving 0.15 + x = -0.259807621 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.15' to each side of the equation. 0.15 + -0.15 + x = -0.259807621 + -0.15 Combine like terms: 0.15 + -0.15 = 0.00 0.00 + x = -0.259807621 + -0.15 x = -0.259807621 + -0.15 Combine like terms: -0.259807621 + -0.15 = -0.409807621 x = -0.409807621 Simplifying x = -0.409807621

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.109807621, -0.409807621}

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