3x(2x+2x)=35+5x

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Solution for 3x(2x+2x)=35+5x equation:


Simplifying
3x(2x + 2x) = 35 + 5x

Combine like terms: 2x + 2x = 4x
3x(4x) = 35 + 5x

Remove parenthesis around (4x)
3x * 4x = 35 + 5x

Reorder the terms for easier multiplication:
3 * 4x * x = 35 + 5x

Multiply 3 * 4
12x * x = 35 + 5x

Multiply x * x
12x2 = 35 + 5x

Solving
12x2 = 35 + 5x

Solving for variable 'x'.

Reorder the terms:
-35 + -5x + 12x2 = 35 + 5x + -35 + -5x

Reorder the terms:
-35 + -5x + 12x2 = 35 + -35 + 5x + -5x

Combine like terms: 35 + -35 = 0
-35 + -5x + 12x2 = 0 + 5x + -5x
-35 + -5x + 12x2 = 5x + -5x

Combine like terms: 5x + -5x = 0
-35 + -5x + 12x2 = 0

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

Divide each side by '12'.
-2.916666667 + -0.4166666667x + x2 = 0

Move the constant term to the right:

Add '2.916666667' to each side of the equation.
-2.916666667 + -0.4166666667x + 2.916666667 + x2 = 0 + 2.916666667

Reorder the terms:
-2.916666667 + 2.916666667 + -0.4166666667x + x2 = 0 + 2.916666667

Combine like terms: -2.916666667 + 2.916666667 = 0.000000000
0.000000000 + -0.4166666667x + x2 = 0 + 2.916666667
-0.4166666667x + x2 = 0 + 2.916666667

Combine like terms: 0 + 2.916666667 = 2.916666667
-0.4166666667x + x2 = 2.916666667

The x term is -0.4166666667x.  Take half its coefficient (-0.2083333334).
Square it (0.04340277781) and add it to both sides.

Add '0.04340277781' to each side of the equation.
-0.4166666667x + 0.04340277781 + x2 = 2.916666667 + 0.04340277781

Reorder the terms:
0.04340277781 + -0.4166666667x + x2 = 2.916666667 + 0.04340277781

Combine like terms: 2.916666667 + 0.04340277781 = 2.96006944481
0.04340277781 + -0.4166666667x + x2 = 2.96006944481

Factor a perfect square on the left side:
(x + -0.2083333334)(x + -0.2083333334) = 2.96006944481

Calculate the square root of the right side: 1.720485235

Break this problem into two subproblems by setting 
(x + -0.2083333334) equal to 1.720485235 and -1.720485235.

Subproblem 1

x + -0.2083333334 = 1.720485235 Simplifying x + -0.2083333334 = 1.720485235 Reorder the terms: -0.2083333334 + x = 1.720485235 Solving -0.2083333334 + x = 1.720485235 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2083333334' to each side of the equation. -0.2083333334 + 0.2083333334 + x = 1.720485235 + 0.2083333334 Combine like terms: -0.2083333334 + 0.2083333334 = 0.0000000000 0.0000000000 + x = 1.720485235 + 0.2083333334 x = 1.720485235 + 0.2083333334 Combine like terms: 1.720485235 + 0.2083333334 = 1.9288185684 x = 1.9288185684 Simplifying x = 1.9288185684

Subproblem 2

x + -0.2083333334 = -1.720485235 Simplifying x + -0.2083333334 = -1.720485235 Reorder the terms: -0.2083333334 + x = -1.720485235 Solving -0.2083333334 + x = -1.720485235 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2083333334' to each side of the equation. -0.2083333334 + 0.2083333334 + x = -1.720485235 + 0.2083333334 Combine like terms: -0.2083333334 + 0.2083333334 = 0.0000000000 0.0000000000 + x = -1.720485235 + 0.2083333334 x = -1.720485235 + 0.2083333334 Combine like terms: -1.720485235 + 0.2083333334 = -1.5121519016 x = -1.5121519016 Simplifying x = -1.5121519016

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.9288185684, -1.5121519016}

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