4.5x^2-135x-500=0

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Solution for 4.5x^2-135x-500=0 equation:


Simplifying
4.5x2 + -135x + -500 = 0

Reorder the terms:
-500 + -135x + 4.5x2 = 0

Solving
-500 + -135x + 4.5x2 = 0

Solving for variable 'x'.

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

Divide each side by '4.5'.
-111.1111111 + -30x + x2 = 0

Move the constant term to the right:

Add '111.1111111' to each side of the equation.
-111.1111111 + -30x + 111.1111111 + x2 = 0 + 111.1111111

Reorder the terms:
-111.1111111 + 111.1111111 + -30x + x2 = 0 + 111.1111111

Combine like terms: -111.1111111 + 111.1111111 = 0.0000000
0.0000000 + -30x + x2 = 0 + 111.1111111
-30x + x2 = 0 + 111.1111111

Combine like terms: 0 + 111.1111111 = 111.1111111
-30x + x2 = 111.1111111

The x term is -30x.  Take half its coefficient (-15).
Square it (225) and add it to both sides.

Add '225' to each side of the equation.
-30x + 225 + x2 = 111.1111111 + 225

Reorder the terms:
225 + -30x + x2 = 111.1111111 + 225

Combine like terms: 111.1111111 + 225 = 336.1111111
225 + -30x + x2 = 336.1111111

Factor a perfect square on the left side:
(x + -15)(x + -15) = 336.1111111

Calculate the square root of the right side: 18.333333333

Break this problem into two subproblems by setting 
(x + -15) equal to 18.333333333 and -18.333333333.

Subproblem 1

x + -15 = 18.333333333 Simplifying x + -15 = 18.333333333 Reorder the terms: -15 + x = 18.333333333 Solving -15 + x = 18.333333333 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + x = 18.333333333 + 15 Combine like terms: -15 + 15 = 0 0 + x = 18.333333333 + 15 x = 18.333333333 + 15 Combine like terms: 18.333333333 + 15 = 33.333333333 x = 33.333333333 Simplifying x = 33.333333333

Subproblem 2

x + -15 = -18.333333333 Simplifying x + -15 = -18.333333333 Reorder the terms: -15 + x = -18.333333333 Solving -15 + x = -18.333333333 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + x = -18.333333333 + 15 Combine like terms: -15 + 15 = 0 0 + x = -18.333333333 + 15 x = -18.333333333 + 15 Combine like terms: -18.333333333 + 15 = -3.333333333 x = -3.333333333 Simplifying x = -3.333333333

Solution

The solution to the problem is based on the solutions from the subproblems. x = {33.333333333, -3.333333333}

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