0=-0.5x^2+25x-150

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Solution for 0=-0.5x^2+25x-150 equation:


Simplifying
0 = -0.5x2 + 25x + -150

Reorder the terms:
0 = -150 + 25x + -0.5x2

Solving
0 = -150 + 25x + -0.5x2

Solving for variable 'x'.

Combine like terms: 0 + 150 = 150
150 + -25x + 0.5x2 = -150 + 25x + -0.5x2 + 150 + -25x + 0.5x2

Reorder the terms:
150 + -25x + 0.5x2 = -150 + 150 + 25x + -25x + -0.5x2 + 0.5x2

Combine like terms: -150 + 150 = 0
150 + -25x + 0.5x2 = 0 + 25x + -25x + -0.5x2 + 0.5x2
150 + -25x + 0.5x2 = 25x + -25x + -0.5x2 + 0.5x2

Combine like terms: 25x + -25x = 0
150 + -25x + 0.5x2 = 0 + -0.5x2 + 0.5x2
150 + -25x + 0.5x2 = -0.5x2 + 0.5x2

Combine like terms: -0.5x2 + 0.5x2 = 0.0
150 + -25x + 0.5x2 = 0.0

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

Divide each side by '0.5'.
300 + -50x + x2 = 0

Move the constant term to the right:

Add '-300' to each side of the equation.
300 + -50x + -300 + x2 = 0 + -300

Reorder the terms:
300 + -300 + -50x + x2 = 0 + -300

Combine like terms: 300 + -300 = 0
0 + -50x + x2 = 0 + -300
-50x + x2 = 0 + -300

Combine like terms: 0 + -300 = -300
-50x + x2 = -300

The x term is -50x.  Take half its coefficient (-25).
Square it (625) and add it to both sides.

Add '625' to each side of the equation.
-50x + 625 + x2 = -300 + 625

Reorder the terms:
625 + -50x + x2 = -300 + 625

Combine like terms: -300 + 625 = 325
625 + -50x + x2 = 325

Factor a perfect square on the left side:
(x + -25)(x + -25) = 325

Calculate the square root of the right side: 18.027756377

Break this problem into two subproblems by setting 
(x + -25) equal to 18.027756377 and -18.027756377.

Subproblem 1

x + -25 = 18.027756377 Simplifying x + -25 = 18.027756377 Reorder the terms: -25 + x = 18.027756377 Solving -25 + x = 18.027756377 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '25' to each side of the equation. -25 + 25 + x = 18.027756377 + 25 Combine like terms: -25 + 25 = 0 0 + x = 18.027756377 + 25 x = 18.027756377 + 25 Combine like terms: 18.027756377 + 25 = 43.027756377 x = 43.027756377 Simplifying x = 43.027756377

Subproblem 2

x + -25 = -18.027756377 Simplifying x + -25 = -18.027756377 Reorder the terms: -25 + x = -18.027756377 Solving -25 + x = -18.027756377 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '25' to each side of the equation. -25 + 25 + x = -18.027756377 + 25 Combine like terms: -25 + 25 = 0 0 + x = -18.027756377 + 25 x = -18.027756377 + 25 Combine like terms: -18.027756377 + 25 = 6.972243623 x = 6.972243623 Simplifying x = 6.972243623

Solution

The solution to the problem is based on the solutions from the subproblems. x = {43.027756377, 6.972243623}

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