3x^2-50x=168

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Solution for 3x^2-50x=168 equation:


Simplifying
3x2 + -50x = 168

Reorder the terms:
-50x + 3x2 = 168

Solving
-50x + 3x2 = 168

Solving for variable 'x'.

Reorder the terms:
-168 + -50x + 3x2 = 168 + -168

Combine like terms: 168 + -168 = 0
-168 + -50x + 3x2 = 0

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

Divide each side by '3'.
-56 + -16.66666667x + x2 = 0

Move the constant term to the right:

Add '56' to each side of the equation.
-56 + -16.66666667x + 56 + x2 = 0 + 56

Reorder the terms:
-56 + 56 + -16.66666667x + x2 = 0 + 56

Combine like terms: -56 + 56 = 0
0 + -16.66666667x + x2 = 0 + 56
-16.66666667x + x2 = 0 + 56

Combine like terms: 0 + 56 = 56
-16.66666667x + x2 = 56

The x term is -16.66666667x.  Take half its coefficient (-8.333333335).
Square it (69.44444447) and add it to both sides.

Add '69.44444447' to each side of the equation.
-16.66666667x + 69.44444447 + x2 = 56 + 69.44444447

Reorder the terms:
69.44444447 + -16.66666667x + x2 = 56 + 69.44444447

Combine like terms: 56 + 69.44444447 = 125.44444447
69.44444447 + -16.66666667x + x2 = 125.44444447

Factor a perfect square on the left side:
(x + -8.333333335)(x + -8.333333335) = 125.44444447

Calculate the square root of the right side: 11.200198412

Break this problem into two subproblems by setting 
(x + -8.333333335) equal to 11.200198412 and -11.200198412.

Subproblem 1

x + -8.333333335 = 11.200198412 Simplifying x + -8.333333335 = 11.200198412 Reorder the terms: -8.333333335 + x = 11.200198412 Solving -8.333333335 + x = 11.200198412 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.333333335' to each side of the equation. -8.333333335 + 8.333333335 + x = 11.200198412 + 8.333333335 Combine like terms: -8.333333335 + 8.333333335 = 0.000000000 0.000000000 + x = 11.200198412 + 8.333333335 x = 11.200198412 + 8.333333335 Combine like terms: 11.200198412 + 8.333333335 = 19.533531747 x = 19.533531747 Simplifying x = 19.533531747

Subproblem 2

x + -8.333333335 = -11.200198412 Simplifying x + -8.333333335 = -11.200198412 Reorder the terms: -8.333333335 + x = -11.200198412 Solving -8.333333335 + x = -11.200198412 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.333333335' to each side of the equation. -8.333333335 + 8.333333335 + x = -11.200198412 + 8.333333335 Combine like terms: -8.333333335 + 8.333333335 = 0.000000000 0.000000000 + x = -11.200198412 + 8.333333335 x = -11.200198412 + 8.333333335 Combine like terms: -11.200198412 + 8.333333335 = -2.866865077 x = -2.866865077 Simplifying x = -2.866865077

Solution

The solution to the problem is based on the solutions from the subproblems. x = {19.533531747, -2.866865077}

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