-5(3-2x)(x)=-3x^2+2

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Solution for -5(3-2x)(x)=-3x^2+2 equation:


Simplifying
-5(3 + -2x)(x) = -3x2 + 2

Reorder the terms for easier multiplication:
-5x(3 + -2x) = -3x2 + 2
(3 * -5x + -2x * -5x) = -3x2 + 2
(-15x + 10x2) = -3x2 + 2

Reorder the terms:
-15x + 10x2 = 2 + -3x2

Solving
-15x + 10x2 = 2 + -3x2

Solving for variable 'x'.

Reorder the terms:
-2 + -15x + 10x2 + 3x2 = 2 + -3x2 + -2 + 3x2

Combine like terms: 10x2 + 3x2 = 13x2
-2 + -15x + 13x2 = 2 + -3x2 + -2 + 3x2

Reorder the terms:
-2 + -15x + 13x2 = 2 + -2 + -3x2 + 3x2

Combine like terms: 2 + -2 = 0
-2 + -15x + 13x2 = 0 + -3x2 + 3x2
-2 + -15x + 13x2 = -3x2 + 3x2

Combine like terms: -3x2 + 3x2 = 0
-2 + -15x + 13x2 = 0

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

Divide each side by '13'.
-0.1538461538 + -1.153846154x + x2 = 0

Move the constant term to the right:

Add '0.1538461538' to each side of the equation.
-0.1538461538 + -1.153846154x + 0.1538461538 + x2 = 0 + 0.1538461538

Reorder the terms:
-0.1538461538 + 0.1538461538 + -1.153846154x + x2 = 0 + 0.1538461538

Combine like terms: -0.1538461538 + 0.1538461538 = 0.0000000000
0.0000000000 + -1.153846154x + x2 = 0 + 0.1538461538
-1.153846154x + x2 = 0 + 0.1538461538

Combine like terms: 0 + 0.1538461538 = 0.1538461538
-1.153846154x + x2 = 0.1538461538

The x term is -1.153846154x.  Take half its coefficient (-0.576923077).
Square it (0.3328402368) and add it to both sides.

Add '0.3328402368' to each side of the equation.
-1.153846154x + 0.3328402368 + x2 = 0.1538461538 + 0.3328402368

Reorder the terms:
0.3328402368 + -1.153846154x + x2 = 0.1538461538 + 0.3328402368

Combine like terms: 0.1538461538 + 0.3328402368 = 0.4866863906
0.3328402368 + -1.153846154x + x2 = 0.4866863906

Factor a perfect square on the left side:
(x + -0.576923077)(x + -0.576923077) = 0.4866863906

Calculate the square root of the right side: 0.697629121

Break this problem into two subproblems by setting 
(x + -0.576923077) equal to 0.697629121 and -0.697629121.

Subproblem 1

x + -0.576923077 = 0.697629121 Simplifying x + -0.576923077 = 0.697629121 Reorder the terms: -0.576923077 + x = 0.697629121 Solving -0.576923077 + x = 0.697629121 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.576923077' to each side of the equation. -0.576923077 + 0.576923077 + x = 0.697629121 + 0.576923077 Combine like terms: -0.576923077 + 0.576923077 = 0.000000000 0.000000000 + x = 0.697629121 + 0.576923077 x = 0.697629121 + 0.576923077 Combine like terms: 0.697629121 + 0.576923077 = 1.274552198 x = 1.274552198 Simplifying x = 1.274552198

Subproblem 2

x + -0.576923077 = -0.697629121 Simplifying x + -0.576923077 = -0.697629121 Reorder the terms: -0.576923077 + x = -0.697629121 Solving -0.576923077 + x = -0.697629121 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.576923077' to each side of the equation. -0.576923077 + 0.576923077 + x = -0.697629121 + 0.576923077 Combine like terms: -0.576923077 + 0.576923077 = 0.000000000 0.000000000 + x = -0.697629121 + 0.576923077 x = -0.697629121 + 0.576923077 Combine like terms: -0.697629121 + 0.576923077 = -0.120706044 x = -0.120706044 Simplifying x = -0.120706044

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.274552198, -0.120706044}

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