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

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


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

Reorder the terms:
-3x2 = 2(-5 + 3x)
-3x2 = (-5 * 2 + 3x * 2)
-3x2 = (-10 + 6x)

Solving
-3x2 = -10 + 6x

Solving for variable 'x'.

Reorder the terms:
10 + -6x + -3x2 = -10 + 6x + 10 + -6x

Reorder the terms:
10 + -6x + -3x2 = -10 + 10 + 6x + -6x

Combine like terms: -10 + 10 = 0
10 + -6x + -3x2 = 0 + 6x + -6x
10 + -6x + -3x2 = 6x + -6x

Combine like terms: 6x + -6x = 0
10 + -6x + -3x2 = 0

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

Divide each side by '-3'.
-3.333333333 + 2x + x2 = 0

Move the constant term to the right:

Add '3.333333333' to each side of the equation.
-3.333333333 + 2x + 3.333333333 + x2 = 0 + 3.333333333

Reorder the terms:
-3.333333333 + 3.333333333 + 2x + x2 = 0 + 3.333333333

Combine like terms: -3.333333333 + 3.333333333 = 0.000000000
0.000000000 + 2x + x2 = 0 + 3.333333333
2x + x2 = 0 + 3.333333333

Combine like terms: 0 + 3.333333333 = 3.333333333
2x + x2 = 3.333333333

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 3.333333333 + 1

Reorder the terms:
1 + 2x + x2 = 3.333333333 + 1

Combine like terms: 3.333333333 + 1 = 4.333333333
1 + 2x + x2 = 4.333333333

Factor a perfect square on the left side:
(x + 1)(x + 1) = 4.333333333

Calculate the square root of the right side: 2.081665999

Break this problem into two subproblems by setting 
(x + 1) equal to 2.081665999 and -2.081665999.

Subproblem 1

x + 1 = 2.081665999 Simplifying x + 1 = 2.081665999 Reorder the terms: 1 + x = 2.081665999 Solving 1 + x = 2.081665999 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 2.081665999 + -1 Combine like terms: 1 + -1 = 0 0 + x = 2.081665999 + -1 x = 2.081665999 + -1 Combine like terms: 2.081665999 + -1 = 1.081665999 x = 1.081665999 Simplifying x = 1.081665999

Subproblem 2

x + 1 = -2.081665999 Simplifying x + 1 = -2.081665999 Reorder the terms: 1 + x = -2.081665999 Solving 1 + x = -2.081665999 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -2.081665999 + -1 Combine like terms: 1 + -1 = 0 0 + x = -2.081665999 + -1 x = -2.081665999 + -1 Combine like terms: -2.081665999 + -1 = -3.081665999 x = -3.081665999 Simplifying x = -3.081665999

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.081665999, -3.081665999}

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