0.5x^2=8x-0.625

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Solution for 0.5x^2=8x-0.625 equation:


Simplifying
0.5x2 = 8x + -0.625

Reorder the terms:
0.5x2 = -0.625 + 8x

Solving
0.5x2 = -0.625 + 8x

Solving for variable 'x'.

Reorder the terms:
0.625 + -8x + 0.5x2 = -0.625 + 8x + 0.625 + -8x

Reorder the terms:
0.625 + -8x + 0.5x2 = -0.625 + 0.625 + 8x + -8x

Combine like terms: -0.625 + 0.625 = 0.000
0.625 + -8x + 0.5x2 = 0.000 + 8x + -8x
0.625 + -8x + 0.5x2 = 8x + -8x

Combine like terms: 8x + -8x = 0
0.625 + -8x + 0.5x2 = 0

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

Divide each side by '0.5'.
1.25 + -16x + x2 = 0

Move the constant term to the right:

Add '-1.25' to each side of the equation.
1.25 + -16x + -1.25 + x2 = 0 + -1.25

Reorder the terms:
1.25 + -1.25 + -16x + x2 = 0 + -1.25

Combine like terms: 1.25 + -1.25 = 0.00
0.00 + -16x + x2 = 0 + -1.25
-16x + x2 = 0 + -1.25

Combine like terms: 0 + -1.25 = -1.25
-16x + x2 = -1.25

The x term is -16x.  Take half its coefficient (-8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
-16x + 64 + x2 = -1.25 + 64

Reorder the terms:
64 + -16x + x2 = -1.25 + 64

Combine like terms: -1.25 + 64 = 62.75
64 + -16x + x2 = 62.75

Factor a perfect square on the left side:
(x + -8)(x + -8) = 62.75

Calculate the square root of the right side: 7.921489759

Break this problem into two subproblems by setting 
(x + -8) equal to 7.921489759 and -7.921489759.

Subproblem 1

x + -8 = 7.921489759 Simplifying x + -8 = 7.921489759 Reorder the terms: -8 + x = 7.921489759 Solving -8 + x = 7.921489759 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = 7.921489759 + 8 Combine like terms: -8 + 8 = 0 0 + x = 7.921489759 + 8 x = 7.921489759 + 8 Combine like terms: 7.921489759 + 8 = 15.921489759 x = 15.921489759 Simplifying x = 15.921489759

Subproblem 2

x + -8 = -7.921489759 Simplifying x + -8 = -7.921489759 Reorder the terms: -8 + x = -7.921489759 Solving -8 + x = -7.921489759 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + x = -7.921489759 + 8 Combine like terms: -8 + 8 = 0 0 + x = -7.921489759 + 8 x = -7.921489759 + 8 Combine like terms: -7.921489759 + 8 = 0.078510241 x = 0.078510241 Simplifying x = 0.078510241

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.921489759, 0.078510241}

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