8x^2-100x+75=0

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Solution for 8x^2-100x+75=0 equation:


Simplifying
8x2 + -100x + 75 = 0

Reorder the terms:
75 + -100x + 8x2 = 0

Solving
75 + -100x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
9.375 + -12.5x + x2 = 0

Move the constant term to the right:

Add '-9.375' to each side of the equation.
9.375 + -12.5x + -9.375 + x2 = 0 + -9.375

Reorder the terms:
9.375 + -9.375 + -12.5x + x2 = 0 + -9.375

Combine like terms: 9.375 + -9.375 = 0.000
0.000 + -12.5x + x2 = 0 + -9.375
-12.5x + x2 = 0 + -9.375

Combine like terms: 0 + -9.375 = -9.375
-12.5x + x2 = -9.375

The x term is -12.5x.  Take half its coefficient (-6.25).
Square it (39.0625) and add it to both sides.

Add '39.0625' to each side of the equation.
-12.5x + 39.0625 + x2 = -9.375 + 39.0625

Reorder the terms:
39.0625 + -12.5x + x2 = -9.375 + 39.0625

Combine like terms: -9.375 + 39.0625 = 29.6875
39.0625 + -12.5x + x2 = 29.6875

Factor a perfect square on the left side:
(x + -6.25)(x + -6.25) = 29.6875

Calculate the square root of the right side: 5.448623679

Break this problem into two subproblems by setting 
(x + -6.25) equal to 5.448623679 and -5.448623679.

Subproblem 1

x + -6.25 = 5.448623679 Simplifying x + -6.25 = 5.448623679 Reorder the terms: -6.25 + x = 5.448623679 Solving -6.25 + x = 5.448623679 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.25' to each side of the equation. -6.25 + 6.25 + x = 5.448623679 + 6.25 Combine like terms: -6.25 + 6.25 = 0.00 0.00 + x = 5.448623679 + 6.25 x = 5.448623679 + 6.25 Combine like terms: 5.448623679 + 6.25 = 11.698623679 x = 11.698623679 Simplifying x = 11.698623679

Subproblem 2

x + -6.25 = -5.448623679 Simplifying x + -6.25 = -5.448623679 Reorder the terms: -6.25 + x = -5.448623679 Solving -6.25 + x = -5.448623679 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.25' to each side of the equation. -6.25 + 6.25 + x = -5.448623679 + 6.25 Combine like terms: -6.25 + 6.25 = 0.00 0.00 + x = -5.448623679 + 6.25 x = -5.448623679 + 6.25 Combine like terms: -5.448623679 + 6.25 = 0.801376321 x = 0.801376321 Simplifying x = 0.801376321

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.698623679, 0.801376321}

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