0.8x^2-24x+250x=25

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Solution for 0.8x^2-24x+250x=25 equation:


Simplifying
0.8x2 + -24x + 250x = 25

Reorder the terms:
-24x + 250x + 0.8x2 = 25

Combine like terms: -24x + 250x = 226x
226x + 0.8x2 = 25

Solving
226x + 0.8x2 = 25

Solving for variable 'x'.

Reorder the terms:
-25 + 226x + 0.8x2 = 25 + -25

Combine like terms: 25 + -25 = 0
-25 + 226x + 0.8x2 = 0

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

Divide each side by '0.8'.
-31.25 + 282.5x + x2 = 0

Move the constant term to the right:

Add '31.25' to each side of the equation.
-31.25 + 282.5x + 31.25 + x2 = 0 + 31.25

Reorder the terms:
-31.25 + 31.25 + 282.5x + x2 = 0 + 31.25

Combine like terms: -31.25 + 31.25 = 0.00
0.00 + 282.5x + x2 = 0 + 31.25
282.5x + x2 = 0 + 31.25

Combine like terms: 0 + 31.25 = 31.25
282.5x + x2 = 31.25

The x term is 282.5x.  Take half its coefficient (141.25).
Square it (19951.5625) and add it to both sides.

Add '19951.5625' to each side of the equation.
282.5x + 19951.5625 + x2 = 31.25 + 19951.5625

Reorder the terms:
19951.5625 + 282.5x + x2 = 31.25 + 19951.5625

Combine like terms: 31.25 + 19951.5625 = 19982.8125
19951.5625 + 282.5x + x2 = 19982.8125

Factor a perfect square on the left side:
(x + 141.25)(x + 141.25) = 19982.8125

Calculate the square root of the right side: 141.360576187

Break this problem into two subproblems by setting 
(x + 141.25) equal to 141.360576187 and -141.360576187.

Subproblem 1

x + 141.25 = 141.360576187 Simplifying x + 141.25 = 141.360576187 Reorder the terms: 141.25 + x = 141.360576187 Solving 141.25 + x = 141.360576187 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-141.25' to each side of the equation. 141.25 + -141.25 + x = 141.360576187 + -141.25 Combine like terms: 141.25 + -141.25 = 0.00 0.00 + x = 141.360576187 + -141.25 x = 141.360576187 + -141.25 Combine like terms: 141.360576187 + -141.25 = 0.110576187 x = 0.110576187 Simplifying x = 0.110576187

Subproblem 2

x + 141.25 = -141.360576187 Simplifying x + 141.25 = -141.360576187 Reorder the terms: 141.25 + x = -141.360576187 Solving 141.25 + x = -141.360576187 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-141.25' to each side of the equation. 141.25 + -141.25 + x = -141.360576187 + -141.25 Combine like terms: 141.25 + -141.25 = 0.00 0.00 + x = -141.360576187 + -141.25 x = -141.360576187 + -141.25 Combine like terms: -141.360576187 + -141.25 = -282.610576187 x = -282.610576187 Simplifying x = -282.610576187

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.110576187, -282.610576187}

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