12x^2-20x=3

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Solution for 12x^2-20x=3 equation:


Simplifying
12x2 + -20x = 3

Reorder the terms:
-20x + 12x2 = 3

Solving
-20x + 12x2 = 3

Solving for variable 'x'.

Reorder the terms:
-3 + -20x + 12x2 = 3 + -3

Combine like terms: 3 + -3 = 0
-3 + -20x + 12x2 = 0

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

Divide each side by '12'.
-0.25 + -1.666666667x + x2 = 0

Move the constant term to the right:

Add '0.25' to each side of the equation.
-0.25 + -1.666666667x + 0.25 + x2 = 0 + 0.25

Reorder the terms:
-0.25 + 0.25 + -1.666666667x + x2 = 0 + 0.25

Combine like terms: -0.25 + 0.25 = 0.00
0.00 + -1.666666667x + x2 = 0 + 0.25
-1.666666667x + x2 = 0 + 0.25

Combine like terms: 0 + 0.25 = 0.25
-1.666666667x + x2 = 0.25

The x term is -1.666666667x.  Take half its coefficient (-0.8333333335).
Square it (0.6944444447) and add it to both sides.

Add '0.6944444447' to each side of the equation.
-1.666666667x + 0.6944444447 + x2 = 0.25 + 0.6944444447

Reorder the terms:
0.6944444447 + -1.666666667x + x2 = 0.25 + 0.6944444447

Combine like terms: 0.25 + 0.6944444447 = 0.9444444447
0.6944444447 + -1.666666667x + x2 = 0.9444444447

Factor a perfect square on the left side:
(x + -0.8333333335)(x + -0.8333333335) = 0.9444444447

Calculate the square root of the right side: 0.971825316

Break this problem into two subproblems by setting 
(x + -0.8333333335) equal to 0.971825316 and -0.971825316.

Subproblem 1

x + -0.8333333335 = 0.971825316 Simplifying x + -0.8333333335 = 0.971825316 Reorder the terms: -0.8333333335 + x = 0.971825316 Solving -0.8333333335 + x = 0.971825316 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.8333333335' to each side of the equation. -0.8333333335 + 0.8333333335 + x = 0.971825316 + 0.8333333335 Combine like terms: -0.8333333335 + 0.8333333335 = 0.0000000000 0.0000000000 + x = 0.971825316 + 0.8333333335 x = 0.971825316 + 0.8333333335 Combine like terms: 0.971825316 + 0.8333333335 = 1.8051586495 x = 1.8051586495 Simplifying x = 1.8051586495

Subproblem 2

x + -0.8333333335 = -0.971825316 Simplifying x + -0.8333333335 = -0.971825316 Reorder the terms: -0.8333333335 + x = -0.971825316 Solving -0.8333333335 + x = -0.971825316 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.8333333335' to each side of the equation. -0.8333333335 + 0.8333333335 + x = -0.971825316 + 0.8333333335 Combine like terms: -0.8333333335 + 0.8333333335 = 0.0000000000 0.0000000000 + x = -0.971825316 + 0.8333333335 x = -0.971825316 + 0.8333333335 Combine like terms: -0.971825316 + 0.8333333335 = -0.1384919825 x = -0.1384919825 Simplifying x = -0.1384919825

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.8051586495, -0.1384919825}

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