2X^2=3-3X

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Solution for 2X^2=3-3X equation:


Simplifying
2X2 = 3 + -3X

Solving
2X2 = 3 + -3X

Solving for variable 'X'.

Reorder the terms:
-3 + 3X + 2X2 = 3 + -3X + -3 + 3X

Reorder the terms:
-3 + 3X + 2X2 = 3 + -3 + -3X + 3X

Combine like terms: 3 + -3 = 0
-3 + 3X + 2X2 = 0 + -3X + 3X
-3 + 3X + 2X2 = -3X + 3X

Combine like terms: -3X + 3X = 0
-3 + 3X + 2X2 = 0

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

Divide each side by '2'.
-1.5 + 1.5X + X2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + 1.5X + 1.5 + X2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + 1.5X + X2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + 1.5X + X2 = 0 + 1.5
1.5X + X2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
1.5X + X2 = 1.5

The X term is 1.5X.  Take half its coefficient (0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
1.5X + 0.5625 + X2 = 1.5 + 0.5625

Reorder the terms:
0.5625 + 1.5X + X2 = 1.5 + 0.5625

Combine like terms: 1.5 + 0.5625 = 2.0625
0.5625 + 1.5X + X2 = 2.0625

Factor a perfect square on the left side:
(X + 0.75)(X + 0.75) = 2.0625

Calculate the square root of the right side: 1.436140662

Break this problem into two subproblems by setting 
(X + 0.75) equal to 1.436140662 and -1.436140662.

Subproblem 1

X + 0.75 = 1.436140662 Simplifying X + 0.75 = 1.436140662 Reorder the terms: 0.75 + X = 1.436140662 Solving 0.75 + X = 1.436140662 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + X = 1.436140662 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + X = 1.436140662 + -0.75 X = 1.436140662 + -0.75 Combine like terms: 1.436140662 + -0.75 = 0.686140662 X = 0.686140662 Simplifying X = 0.686140662

Subproblem 2

X + 0.75 = -1.436140662 Simplifying X + 0.75 = -1.436140662 Reorder the terms: 0.75 + X = -1.436140662 Solving 0.75 + X = -1.436140662 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + X = -1.436140662 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + X = -1.436140662 + -0.75 X = -1.436140662 + -0.75 Combine like terms: -1.436140662 + -0.75 = -2.186140662 X = -2.186140662 Simplifying X = -2.186140662

Solution

The solution to the problem is based on the solutions from the subproblems. X = {0.686140662, -2.186140662}

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