3-4x(2+3x)=1(1+5x)

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Solution for 3-4x(2+3x)=1(1+5x) equation:


Simplifying
3 + -4x(2 + 3x) = 1(1 + 5x)
3 + (2 * -4x + 3x * -4x) = 1(1 + 5x)
3 + (-8x + -12x2) = 1(1 + 5x)
3 + -8x + -12x2 = (1 * 1 + 5x * 1)
3 + -8x + -12x2 = (1 + 5x)

Solving
3 + -8x + -12x2 = 1 + 5x

Solving for variable 'x'.

Reorder the terms:
3 + -1 + -8x + -5x + -12x2 = 1 + 5x + -1 + -5x

Combine like terms: 3 + -1 = 2
2 + -8x + -5x + -12x2 = 1 + 5x + -1 + -5x

Combine like terms: -8x + -5x = -13x
2 + -13x + -12x2 = 1 + 5x + -1 + -5x

Reorder the terms:
2 + -13x + -12x2 = 1 + -1 + 5x + -5x

Combine like terms: 1 + -1 = 0
2 + -13x + -12x2 = 0 + 5x + -5x
2 + -13x + -12x2 = 5x + -5x

Combine like terms: 5x + -5x = 0
2 + -13x + -12x2 = 0

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

Divide each side by '-12'.
-0.1666666667 + 1.083333333x + x2 = 0

Move the constant term to the right:

Add '0.1666666667' to each side of the equation.
-0.1666666667 + 1.083333333x + 0.1666666667 + x2 = 0 + 0.1666666667

Reorder the terms:
-0.1666666667 + 0.1666666667 + 1.083333333x + x2 = 0 + 0.1666666667

Combine like terms: -0.1666666667 + 0.1666666667 = 0.0000000000
0.0000000000 + 1.083333333x + x2 = 0 + 0.1666666667
1.083333333x + x2 = 0 + 0.1666666667

Combine like terms: 0 + 0.1666666667 = 0.1666666667
1.083333333x + x2 = 0.1666666667

The x term is 1.083333333x.  Take half its coefficient (0.5416666665).
Square it (0.2934027776) and add it to both sides.

Add '0.2934027776' to each side of the equation.
1.083333333x + 0.2934027776 + x2 = 0.1666666667 + 0.2934027776

Reorder the terms:
0.2934027776 + 1.083333333x + x2 = 0.1666666667 + 0.2934027776

Combine like terms: 0.1666666667 + 0.2934027776 = 0.4600694443
0.2934027776 + 1.083333333x + x2 = 0.4600694443

Factor a perfect square on the left side:
(x + 0.5416666665)(x + 0.5416666665) = 0.4600694443

Calculate the square root of the right side: 0.678284191

Break this problem into two subproblems by setting 
(x + 0.5416666665) equal to 0.678284191 and -0.678284191.

Subproblem 1

x + 0.5416666665 = 0.678284191 Simplifying x + 0.5416666665 = 0.678284191 Reorder the terms: 0.5416666665 + x = 0.678284191 Solving 0.5416666665 + x = 0.678284191 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5416666665' to each side of the equation. 0.5416666665 + -0.5416666665 + x = 0.678284191 + -0.5416666665 Combine like terms: 0.5416666665 + -0.5416666665 = 0.0000000000 0.0000000000 + x = 0.678284191 + -0.5416666665 x = 0.678284191 + -0.5416666665 Combine like terms: 0.678284191 + -0.5416666665 = 0.1366175245 x = 0.1366175245 Simplifying x = 0.1366175245

Subproblem 2

x + 0.5416666665 = -0.678284191 Simplifying x + 0.5416666665 = -0.678284191 Reorder the terms: 0.5416666665 + x = -0.678284191 Solving 0.5416666665 + x = -0.678284191 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5416666665' to each side of the equation. 0.5416666665 + -0.5416666665 + x = -0.678284191 + -0.5416666665 Combine like terms: 0.5416666665 + -0.5416666665 = 0.0000000000 0.0000000000 + x = -0.678284191 + -0.5416666665 x = -0.678284191 + -0.5416666665 Combine like terms: -0.678284191 + -0.5416666665 = -1.2199508575 x = -1.2199508575 Simplifying x = -1.2199508575

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.1366175245, -1.2199508575}

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