6*x*x-x-300=0

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Solution for 6*x*x-x-300=0 equation:


Simplifying
6x * x + -1x + -300 = 0

Multiply x * x
6x2 + -1x + -300 = 0

Reorder the terms:
-300 + -1x + 6x2 = 0

Solving
-300 + -1x + 6x2 = 0

Solving for variable 'x'.

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

Divide each side by '6'.
-50 + -0.1666666667x + x2 = 0

Move the constant term to the right:

Add '50' to each side of the equation.
-50 + -0.1666666667x + 50 + x2 = 0 + 50

Reorder the terms:
-50 + 50 + -0.1666666667x + x2 = 0 + 50

Combine like terms: -50 + 50 = 0
0 + -0.1666666667x + x2 = 0 + 50
-0.1666666667x + x2 = 0 + 50

Combine like terms: 0 + 50 = 50
-0.1666666667x + x2 = 50

The x term is -0.1666666667x.  Take half its coefficient (-0.08333333335).
Square it (0.006944444447) and add it to both sides.

Add '0.006944444447' to each side of the equation.
-0.1666666667x + 0.006944444447 + x2 = 50 + 0.006944444447

Reorder the terms:
0.006944444447 + -0.1666666667x + x2 = 50 + 0.006944444447

Combine like terms: 50 + 0.006944444447 = 50.006944444447
0.006944444447 + -0.1666666667x + x2 = 50.006944444447

Factor a perfect square on the left side:
(x + -0.08333333335)(x + -0.08333333335) = 50.006944444447

Calculate the square root of the right side: 7.071558841

Break this problem into two subproblems by setting 
(x + -0.08333333335) equal to 7.071558841 and -7.071558841.

Subproblem 1

x + -0.08333333335 = 7.071558841 Simplifying x + -0.08333333335 = 7.071558841 Reorder the terms: -0.08333333335 + x = 7.071558841 Solving -0.08333333335 + x = 7.071558841 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.08333333335' to each side of the equation. -0.08333333335 + 0.08333333335 + x = 7.071558841 + 0.08333333335 Combine like terms: -0.08333333335 + 0.08333333335 = 0.00000000000 0.00000000000 + x = 7.071558841 + 0.08333333335 x = 7.071558841 + 0.08333333335 Combine like terms: 7.071558841 + 0.08333333335 = 7.15489217435 x = 7.15489217435 Simplifying x = 7.15489217435

Subproblem 2

x + -0.08333333335 = -7.071558841 Simplifying x + -0.08333333335 = -7.071558841 Reorder the terms: -0.08333333335 + x = -7.071558841 Solving -0.08333333335 + x = -7.071558841 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.08333333335' to each side of the equation. -0.08333333335 + 0.08333333335 + x = -7.071558841 + 0.08333333335 Combine like terms: -0.08333333335 + 0.08333333335 = 0.00000000000 0.00000000000 + x = -7.071558841 + 0.08333333335 x = -7.071558841 + 0.08333333335 Combine like terms: -7.071558841 + 0.08333333335 = -6.98822550765 x = -6.98822550765 Simplifying x = -6.98822550765

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.15489217435, -6.98822550765}

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