66.67x^2+50*x=6

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Solution for 66.67x^2+50*x=6 equation:


Simplifying
66.67x2 + 50x = 6

Reorder the terms:
50x + 66.67x2 = 6

Solving
50x + 66.67x2 = 6

Solving for variable 'x'.

Reorder the terms:
-6 + 50x + 66.67x2 = 6 + -6

Combine like terms: 6 + -6 = 0
-6 + 50x + 66.67x2 = 0

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

Divide each side by '66.67'.
-0.08999550022 + 0.7499625019x + x2 = 0

Move the constant term to the right:

Add '0.08999550022' to each side of the equation.
-0.08999550022 + 0.7499625019x + 0.08999550022 + x2 = 0 + 0.08999550022

Reorder the terms:
-0.08999550022 + 0.08999550022 + 0.7499625019x + x2 = 0 + 0.08999550022

Combine like terms: -0.08999550022 + 0.08999550022 = 0.00000000000
0.00000000000 + 0.7499625019x + x2 = 0 + 0.08999550022
0.7499625019x + x2 = 0 + 0.08999550022

Combine like terms: 0 + 0.08999550022 = 0.08999550022
0.7499625019x + x2 = 0.08999550022

The x term is 0.7499625019x.  Take half its coefficient (0.374981251).
Square it (0.1406109386) and add it to both sides.

Add '0.1406109386' to each side of the equation.
0.7499625019x + 0.1406109386 + x2 = 0.08999550022 + 0.1406109386

Reorder the terms:
0.1406109386 + 0.7499625019x + x2 = 0.08999550022 + 0.1406109386

Combine like terms: 0.08999550022 + 0.1406109386 = 0.23060643882
0.1406109386 + 0.7499625019x + x2 = 0.23060643882

Factor a perfect square on the left side:
(x + 0.374981251)(x + 0.374981251) = 0.23060643882

Calculate the square root of the right side: 0.480214992

Break this problem into two subproblems by setting 
(x + 0.374981251) equal to 0.480214992 and -0.480214992.

Subproblem 1

x + 0.374981251 = 0.480214992 Simplifying x + 0.374981251 = 0.480214992 Reorder the terms: 0.374981251 + x = 0.480214992 Solving 0.374981251 + x = 0.480214992 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.374981251' to each side of the equation. 0.374981251 + -0.374981251 + x = 0.480214992 + -0.374981251 Combine like terms: 0.374981251 + -0.374981251 = 0.000000000 0.000000000 + x = 0.480214992 + -0.374981251 x = 0.480214992 + -0.374981251 Combine like terms: 0.480214992 + -0.374981251 = 0.105233741 x = 0.105233741 Simplifying x = 0.105233741

Subproblem 2

x + 0.374981251 = -0.480214992 Simplifying x + 0.374981251 = -0.480214992 Reorder the terms: 0.374981251 + x = -0.480214992 Solving 0.374981251 + x = -0.480214992 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.374981251' to each side of the equation. 0.374981251 + -0.374981251 + x = -0.480214992 + -0.374981251 Combine like terms: 0.374981251 + -0.374981251 = 0.000000000 0.000000000 + x = -0.480214992 + -0.374981251 x = -0.480214992 + -0.374981251 Combine like terms: -0.480214992 + -0.374981251 = -0.855196243 x = -0.855196243 Simplifying x = -0.855196243

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.105233741, -0.855196243}

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