(.25x^2)-9x-7000=0

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Solution for (.25x^2)-9x-7000=0 equation:


Simplifying
(0.25x2) + -9x + -7000 = 0

Reorder the terms:
-7000 + -9x + (0.25x2) = 0

Solving
-7000 + -9x + (0.25x2) = 0

Solving for variable 'x'.

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

Divide each side by '0.25'.
-28000 + -36x + x2 = 0

Move the constant term to the right:

Add '28000' to each side of the equation.
-28000 + -36x + 28000 + x2 = 0 + 28000

Reorder the terms:
-28000 + 28000 + -36x + x2 = 0 + 28000

Combine like terms: -28000 + 28000 = 0
0 + -36x + x2 = 0 + 28000
-36x + x2 = 0 + 28000

Combine like terms: 0 + 28000 = 28000
-36x + x2 = 28000

The x term is -36x.  Take half its coefficient (-18).
Square it (324) and add it to both sides.

Add '324' to each side of the equation.
-36x + 324 + x2 = 28000 + 324

Reorder the terms:
324 + -36x + x2 = 28000 + 324

Combine like terms: 28000 + 324 = 28324
324 + -36x + x2 = 28324

Factor a perfect square on the left side:
((x) + -18)((x) + -18) = 28324

Calculate the square root of the right side: 168.297355891

Break this problem into two subproblems by setting 
((x) + -18) equal to 168.297355891 and -168.297355891.

Subproblem 1

(x) + -18 = 168.297355891 Simplifying (x) + -18 = 168.297355891 x + -18 = 168.297355891 Reorder the terms: -18 + x = 168.297355891 Solving -18 + x = 168.297355891 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '18' to each side of the equation. -18 + 18 + x = 168.297355891 + 18 Combine like terms: -18 + 18 = 0 0 + x = 168.297355891 + 18 x = 168.297355891 + 18 Combine like terms: 168.297355891 + 18 = 186.297355891 x = 186.297355891 Simplifying x = 186.297355891

Subproblem 2

(x) + -18 = -168.297355891 Simplifying (x) + -18 = -168.297355891 x + -18 = -168.297355891 Reorder the terms: -18 + x = -168.297355891 Solving -18 + x = -168.297355891 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '18' to each side of the equation. -18 + 18 + x = -168.297355891 + 18 Combine like terms: -18 + 18 = 0 0 + x = -168.297355891 + 18 x = -168.297355891 + 18 Combine like terms: -168.297355891 + 18 = -150.297355891 x = -150.297355891 Simplifying x = -150.297355891

Solution

The solution to the problem is based on the solutions from the subproblems. x = {186.297355891, -150.297355891}

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