x(5x-4)+x(3x-2)=23-10

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Solution for x(5x-4)+x(3x-2)=23-10 equation:


Simplifying
x(5x + -4) + x(3x + -2) = 23 + -10

Reorder the terms:
x(-4 + 5x) + x(3x + -2) = 23 + -10
(-4 * x + 5x * x) + x(3x + -2) = 23 + -10
(-4x + 5x2) + x(3x + -2) = 23 + -10

Reorder the terms:
-4x + 5x2 + x(-2 + 3x) = 23 + -10
-4x + 5x2 + (-2 * x + 3x * x) = 23 + -10
-4x + 5x2 + (-2x + 3x2) = 23 + -10

Reorder the terms:
-4x + -2x + 5x2 + 3x2 = 23 + -10

Combine like terms: -4x + -2x = -6x
-6x + 5x2 + 3x2 = 23 + -10

Combine like terms: 5x2 + 3x2 = 8x2
-6x + 8x2 = 23 + -10

Combine like terms: 23 + -10 = 13
-6x + 8x2 = 13

Solving
-6x + 8x2 = 13

Solving for variable 'x'.

Reorder the terms:
-13 + -6x + 8x2 = 13 + -13

Combine like terms: 13 + -13 = 0
-13 + -6x + 8x2 = 0

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

Divide each side by '8'.
-1.625 + -0.75x + x2 = 0

Move the constant term to the right:

Add '1.625' to each side of the equation.
-1.625 + -0.75x + 1.625 + x2 = 0 + 1.625

Reorder the terms:
-1.625 + 1.625 + -0.75x + x2 = 0 + 1.625

Combine like terms: -1.625 + 1.625 = 0.000
0.000 + -0.75x + x2 = 0 + 1.625
-0.75x + x2 = 0 + 1.625

Combine like terms: 0 + 1.625 = 1.625
-0.75x + x2 = 1.625

The x term is -0.75x.  Take half its coefficient (-0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
-0.75x + 0.140625 + x2 = 1.625 + 0.140625

Reorder the terms:
0.140625 + -0.75x + x2 = 1.625 + 0.140625

Combine like terms: 1.625 + 0.140625 = 1.765625
0.140625 + -0.75x + x2 = 1.765625

Factor a perfect square on the left side:
(x + -0.375)(x + -0.375) = 1.765625

Calculate the square root of the right side: 1.328768227

Break this problem into two subproblems by setting 
(x + -0.375) equal to 1.328768227 and -1.328768227.

Subproblem 1

x + -0.375 = 1.328768227 Simplifying x + -0.375 = 1.328768227 Reorder the terms: -0.375 + x = 1.328768227 Solving -0.375 + x = 1.328768227 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + x = 1.328768227 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x = 1.328768227 + 0.375 x = 1.328768227 + 0.375 Combine like terms: 1.328768227 + 0.375 = 1.703768227 x = 1.703768227 Simplifying x = 1.703768227

Subproblem 2

x + -0.375 = -1.328768227 Simplifying x + -0.375 = -1.328768227 Reorder the terms: -0.375 + x = -1.328768227 Solving -0.375 + x = -1.328768227 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + x = -1.328768227 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x = -1.328768227 + 0.375 x = -1.328768227 + 0.375 Combine like terms: -1.328768227 + 0.375 = -0.953768227 x = -0.953768227 Simplifying x = -0.953768227

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.703768227, -0.953768227}

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