3x^2+500x+300=0

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Solution for 3x^2+500x+300=0 equation:


Simplifying
3x2 + 500x + 300 = 0

Reorder the terms:
300 + 500x + 3x2 = 0

Solving
300 + 500x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
100 + 166.6666667x + x2 = 0

Move the constant term to the right:

Add '-100' to each side of the equation.
100 + 166.6666667x + -100 + x2 = 0 + -100

Reorder the terms:
100 + -100 + 166.6666667x + x2 = 0 + -100

Combine like terms: 100 + -100 = 0
0 + 166.6666667x + x2 = 0 + -100
166.6666667x + x2 = 0 + -100

Combine like terms: 0 + -100 = -100
166.6666667x + x2 = -100

The x term is 166.6666667x.  Take half its coefficient (83.33333335).
Square it (6944.444447) and add it to both sides.

Add '6944.444447' to each side of the equation.
166.6666667x + 6944.444447 + x2 = -100 + 6944.444447

Reorder the terms:
6944.444447 + 166.6666667x + x2 = -100 + 6944.444447

Combine like terms: -100 + 6944.444447 = 6844.444447
6944.444447 + 166.6666667x + x2 = 6844.444447

Factor a perfect square on the left side:
(x + 83.33333335)(x + 83.33333335) = 6844.444447

Calculate the square root of the right side: 82.731157655

Break this problem into two subproblems by setting 
(x + 83.33333335) equal to 82.731157655 and -82.731157655.

Subproblem 1

x + 83.33333335 = 82.731157655 Simplifying x + 83.33333335 = 82.731157655 Reorder the terms: 83.33333335 + x = 82.731157655 Solving 83.33333335 + x = 82.731157655 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-83.33333335' to each side of the equation. 83.33333335 + -83.33333335 + x = 82.731157655 + -83.33333335 Combine like terms: 83.33333335 + -83.33333335 = 0.00000000 0.00000000 + x = 82.731157655 + -83.33333335 x = 82.731157655 + -83.33333335 Combine like terms: 82.731157655 + -83.33333335 = -0.602175695 x = -0.602175695 Simplifying x = -0.602175695

Subproblem 2

x + 83.33333335 = -82.731157655 Simplifying x + 83.33333335 = -82.731157655 Reorder the terms: 83.33333335 + x = -82.731157655 Solving 83.33333335 + x = -82.731157655 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-83.33333335' to each side of the equation. 83.33333335 + -83.33333335 + x = -82.731157655 + -83.33333335 Combine like terms: 83.33333335 + -83.33333335 = 0.00000000 0.00000000 + x = -82.731157655 + -83.33333335 x = -82.731157655 + -83.33333335 Combine like terms: -82.731157655 + -83.33333335 = -166.064491005 x = -166.064491005 Simplifying x = -166.064491005

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.602175695, -166.064491005}

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