6x+5x(3x-6)=10

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Solution for 6x+5x(3x-6)=10 equation:


Simplifying
6x + 5x(3x + -6) = 10

Reorder the terms:
6x + 5x(-6 + 3x) = 10
6x + (-6 * 5x + 3x * 5x) = 10
6x + (-30x + 15x2) = 10

Combine like terms: 6x + -30x = -24x
-24x + 15x2 = 10

Solving
-24x + 15x2 = 10

Solving for variable 'x'.

Reorder the terms:
-10 + -24x + 15x2 = 10 + -10

Combine like terms: 10 + -10 = 0
-10 + -24x + 15x2 = 0

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

Divide each side by '15'.
-0.6666666667 + -1.6x + x2 = 0

Move the constant term to the right:

Add '0.6666666667' to each side of the equation.
-0.6666666667 + -1.6x + 0.6666666667 + x2 = 0 + 0.6666666667

Reorder the terms:
-0.6666666667 + 0.6666666667 + -1.6x + x2 = 0 + 0.6666666667

Combine like terms: -0.6666666667 + 0.6666666667 = 0.0000000000
0.0000000000 + -1.6x + x2 = 0 + 0.6666666667
-1.6x + x2 = 0 + 0.6666666667

Combine like terms: 0 + 0.6666666667 = 0.6666666667
-1.6x + x2 = 0.6666666667

The x term is -1.6x.  Take half its coefficient (-0.8).
Square it (0.64) and add it to both sides.

Add '0.64' to each side of the equation.
-1.6x + 0.64 + x2 = 0.6666666667 + 0.64

Reorder the terms:
0.64 + -1.6x + x2 = 0.6666666667 + 0.64

Combine like terms: 0.6666666667 + 0.64 = 1.3066666667
0.64 + -1.6x + x2 = 1.3066666667

Factor a perfect square on the left side:
(x + -0.8)(x + -0.8) = 1.3066666667

Calculate the square root of the right side: 1.143095213

Break this problem into two subproblems by setting 
(x + -0.8) equal to 1.143095213 and -1.143095213.

Subproblem 1

x + -0.8 = 1.143095213 Simplifying x + -0.8 = 1.143095213 Reorder the terms: -0.8 + x = 1.143095213 Solving -0.8 + x = 1.143095213 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.8' to each side of the equation. -0.8 + 0.8 + x = 1.143095213 + 0.8 Combine like terms: -0.8 + 0.8 = 0.0 0.0 + x = 1.143095213 + 0.8 x = 1.143095213 + 0.8 Combine like terms: 1.143095213 + 0.8 = 1.943095213 x = 1.943095213 Simplifying x = 1.943095213

Subproblem 2

x + -0.8 = -1.143095213 Simplifying x + -0.8 = -1.143095213 Reorder the terms: -0.8 + x = -1.143095213 Solving -0.8 + x = -1.143095213 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.8' to each side of the equation. -0.8 + 0.8 + x = -1.143095213 + 0.8 Combine like terms: -0.8 + 0.8 = 0.0 0.0 + x = -1.143095213 + 0.8 x = -1.143095213 + 0.8 Combine like terms: -1.143095213 + 0.8 = -0.343095213 x = -0.343095213 Simplifying x = -0.343095213

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.943095213, -0.343095213}

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