2(1-x^2)-3x(1-x)=7

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Solution for 2(1-x^2)-3x(1-x)=7 equation:


Simplifying
2(1 + -1x2) + -3x(1 + -1x) = 7
(1 * 2 + -1x2 * 2) + -3x(1 + -1x) = 7
(2 + -2x2) + -3x(1 + -1x) = 7
2 + -2x2 + (1 * -3x + -1x * -3x) = 7
2 + -2x2 + (-3x + 3x2) = 7

Reorder the terms:
2 + -3x + -2x2 + 3x2 = 7

Combine like terms: -2x2 + 3x2 = 1x2
2 + -3x + 1x2 = 7

Solving
2 + -3x + 1x2 = 7

Solving for variable 'x'.

Reorder the terms:
2 + -7 + -3x + 1x2 = 7 + -7

Combine like terms: 2 + -7 = -5
-5 + -3x + 1x2 = 7 + -7

Combine like terms: 7 + -7 = 0
-5 + -3x + 1x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + -3x + 5 + x2 = 0 + 5

Reorder the terms:
-5 + 5 + -3x + x2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -3x + x2 = 0 + 5
-3x + x2 = 0 + 5

Combine like terms: 0 + 5 = 5
-3x + x2 = 5

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 = 5 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 5 + 2.25

Combine like terms: 5 + 2.25 = 7.25
2.25 + -3x + x2 = 7.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 7.25

Calculate the square root of the right side: 2.692582404

Break this problem into two subproblems by setting 
(x + -1.5) equal to 2.692582404 and -2.692582404.

Subproblem 1

x + -1.5 = 2.692582404 Simplifying x + -1.5 = 2.692582404 Reorder the terms: -1.5 + x = 2.692582404 Solving -1.5 + x = 2.692582404 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 = 2.692582404 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 2.692582404 + 1.5 x = 2.692582404 + 1.5 Combine like terms: 2.692582404 + 1.5 = 4.192582404 x = 4.192582404 Simplifying x = 4.192582404

Subproblem 2

x + -1.5 = -2.692582404 Simplifying x + -1.5 = -2.692582404 Reorder the terms: -1.5 + x = -2.692582404 Solving -1.5 + x = -2.692582404 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 = -2.692582404 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -2.692582404 + 1.5 x = -2.692582404 + 1.5 Combine like terms: -2.692582404 + 1.5 = -1.192582404 x = -1.192582404 Simplifying x = -1.192582404

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.192582404, -1.192582404}

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