0.5x^2-5x-150=0

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Solution for 0.5x^2-5x-150=0 equation:


Simplifying
0.5x2 + -5x + -150 = 0

Reorder the terms:
-150 + -5x + 0.5x2 = 0

Solving
-150 + -5x + 0.5x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.5'.
-300 + -10x + x2 = 0

Move the constant term to the right:

Add '300' to each side of the equation.
-300 + -10x + 300 + x2 = 0 + 300

Reorder the terms:
-300 + 300 + -10x + x2 = 0 + 300

Combine like terms: -300 + 300 = 0
0 + -10x + x2 = 0 + 300
-10x + x2 = 0 + 300

Combine like terms: 0 + 300 = 300
-10x + x2 = 300

The x term is -10x.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10x + 25 + x2 = 300 + 25

Reorder the terms:
25 + -10x + x2 = 300 + 25

Combine like terms: 300 + 25 = 325
25 + -10x + x2 = 325

Factor a perfect square on the left side:
(x + -5)(x + -5) = 325

Calculate the square root of the right side: 18.027756377

Break this problem into two subproblems by setting 
(x + -5) equal to 18.027756377 and -18.027756377.

Subproblem 1

x + -5 = 18.027756377 Simplifying x + -5 = 18.027756377 Reorder the terms: -5 + x = 18.027756377 Solving -5 + x = 18.027756377 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = 18.027756377 + 5 Combine like terms: -5 + 5 = 0 0 + x = 18.027756377 + 5 x = 18.027756377 + 5 Combine like terms: 18.027756377 + 5 = 23.027756377 x = 23.027756377 Simplifying x = 23.027756377

Subproblem 2

x + -5 = -18.027756377 Simplifying x + -5 = -18.027756377 Reorder the terms: -5 + x = -18.027756377 Solving -5 + x = -18.027756377 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = -18.027756377 + 5 Combine like terms: -5 + 5 = 0 0 + x = -18.027756377 + 5 x = -18.027756377 + 5 Combine like terms: -18.027756377 + 5 = -13.027756377 x = -13.027756377 Simplifying x = -13.027756377

Solution

The solution to the problem is based on the solutions from the subproblems. x = {23.027756377, -13.027756377}

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