(2x^2-2x-5x^3+2)-(4x^2-7x-5x^3+3)=

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Solution for (2x^2-2x-5x^3+2)-(4x^2-7x-5x^3+3)= equation:


Simplifying
(2x2 + -2x + -5x3 + 2) + -1(4x2 + -7x + -5x3 + 3) = 0

Reorder the terms:
(2 + -2x + 2x2 + -5x3) + -1(4x2 + -7x + -5x3 + 3) = 0

Remove parenthesis around (2 + -2x + 2x2 + -5x3)
2 + -2x + 2x2 + -5x3 + -1(4x2 + -7x + -5x3 + 3) = 0

Reorder the terms:
2 + -2x + 2x2 + -5x3 + -1(3 + -7x + 4x2 + -5x3) = 0
2 + -2x + 2x2 + -5x3 + (3 * -1 + -7x * -1 + 4x2 * -1 + -5x3 * -1) = 0
2 + -2x + 2x2 + -5x3 + (-3 + 7x + -4x2 + 5x3) = 0

Reorder the terms:
2 + -3 + -2x + 7x + 2x2 + -4x2 + -5x3 + 5x3 = 0

Combine like terms: 2 + -3 = -1
-1 + -2x + 7x + 2x2 + -4x2 + -5x3 + 5x3 = 0

Combine like terms: -2x + 7x = 5x
-1 + 5x + 2x2 + -4x2 + -5x3 + 5x3 = 0

Combine like terms: 2x2 + -4x2 = -2x2
-1 + 5x + -2x2 + -5x3 + 5x3 = 0

Combine like terms: -5x3 + 5x3 = 0
-1 + 5x + -2x2 + 0 = 0
-1 + 5x + -2x2 = 0

Solving
-1 + 5x + -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'.
0.5 + -2.5x + x2 = 0

Move the constant term to the right:

Add '-0.5' to each side of the equation.
0.5 + -2.5x + -0.5 + x2 = 0 + -0.5

Reorder the terms:
0.5 + -0.5 + -2.5x + x2 = 0 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + -2.5x + x2 = 0 + -0.5
-2.5x + x2 = 0 + -0.5

Combine like terms: 0 + -0.5 = -0.5
-2.5x + x2 = -0.5

The x term is -2.5x.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5x + 1.5625 + x2 = -0.5 + 1.5625

Reorder the terms:
1.5625 + -2.5x + x2 = -0.5 + 1.5625

Combine like terms: -0.5 + 1.5625 = 1.0625
1.5625 + -2.5x + x2 = 1.0625

Factor a perfect square on the left side:
(x + -1.25)(x + -1.25) = 1.0625

Calculate the square root of the right side: 1.030776406

Break this problem into two subproblems by setting 
(x + -1.25) equal to 1.030776406 and -1.030776406.

Subproblem 1

x + -1.25 = 1.030776406 Simplifying x + -1.25 = 1.030776406 Reorder the terms: -1.25 + x = 1.030776406 Solving -1.25 + x = 1.030776406 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = 1.030776406 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = 1.030776406 + 1.25 x = 1.030776406 + 1.25 Combine like terms: 1.030776406 + 1.25 = 2.280776406 x = 2.280776406 Simplifying x = 2.280776406

Subproblem 2

x + -1.25 = -1.030776406 Simplifying x + -1.25 = -1.030776406 Reorder the terms: -1.25 + x = -1.030776406 Solving -1.25 + x = -1.030776406 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = -1.030776406 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = -1.030776406 + 1.25 x = -1.030776406 + 1.25 Combine like terms: -1.030776406 + 1.25 = 0.219223594 x = 0.219223594 Simplifying x = 0.219223594

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.280776406, 0.219223594}

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