3x+x(2+2x)+10=5(x+2)-3(x-1)

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Solution for 3x+x(2+2x)+10=5(x+2)-3(x-1) equation:


Simplifying
3x + x(2 + 2x) + 10 = 5(x + 2) + -3(x + -1)
3x + (2 * x + 2x * x) + 10 = 5(x + 2) + -3(x + -1)
3x + (2x + 2x2) + 10 = 5(x + 2) + -3(x + -1)

Reorder the terms:
10 + 3x + 2x + 2x2 = 5(x + 2) + -3(x + -1)

Combine like terms: 3x + 2x = 5x
10 + 5x + 2x2 = 5(x + 2) + -3(x + -1)

Reorder the terms:
10 + 5x + 2x2 = 5(2 + x) + -3(x + -1)
10 + 5x + 2x2 = (2 * 5 + x * 5) + -3(x + -1)
10 + 5x + 2x2 = (10 + 5x) + -3(x + -1)

Reorder the terms:
10 + 5x + 2x2 = 10 + 5x + -3(-1 + x)
10 + 5x + 2x2 = 10 + 5x + (-1 * -3 + x * -3)
10 + 5x + 2x2 = 10 + 5x + (3 + -3x)

Reorder the terms:
10 + 5x + 2x2 = 10 + 3 + 5x + -3x

Combine like terms: 10 + 3 = 13
10 + 5x + 2x2 = 13 + 5x + -3x

Combine like terms: 5x + -3x = 2x
10 + 5x + 2x2 = 13 + 2x

Solving
10 + 5x + 2x2 = 13 + 2x

Solving for variable 'x'.

Reorder the terms:
10 + -13 + 5x + -2x + 2x2 = 13 + 2x + -13 + -2x

Combine like terms: 10 + -13 = -3
-3 + 5x + -2x + 2x2 = 13 + 2x + -13 + -2x

Combine like terms: 5x + -2x = 3x
-3 + 3x + 2x2 = 13 + 2x + -13 + -2x

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

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

Combine like terms: 2x + -2x = 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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