8x^2-32x+9=0

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Solution for 8x^2-32x+9=0 equation:


Simplifying
8x2 + -32x + 9 = 0

Reorder the terms:
9 + -32x + 8x2 = 0

Solving
9 + -32x + 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'.
1.125 + -4x + x2 = 0

Move the constant term to the right:

Add '-1.125' to each side of the equation.
1.125 + -4x + -1.125 + x2 = 0 + -1.125

Reorder the terms:
1.125 + -1.125 + -4x + x2 = 0 + -1.125

Combine like terms: 1.125 + -1.125 = 0.000
0.000 + -4x + x2 = 0 + -1.125
-4x + x2 = 0 + -1.125

Combine like terms: 0 + -1.125 = -1.125
-4x + x2 = -1.125

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = -1.125 + 4

Reorder the terms:
4 + -4x + x2 = -1.125 + 4

Combine like terms: -1.125 + 4 = 2.875
4 + -4x + x2 = 2.875

Factor a perfect square on the left side:
(x + -2)(x + -2) = 2.875

Calculate the square root of the right side: 1.695582496

Break this problem into two subproblems by setting 
(x + -2) equal to 1.695582496 and -1.695582496.

Subproblem 1

x + -2 = 1.695582496 Simplifying x + -2 = 1.695582496 Reorder the terms: -2 + x = 1.695582496 Solving -2 + x = 1.695582496 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 1.695582496 + 2 Combine like terms: -2 + 2 = 0 0 + x = 1.695582496 + 2 x = 1.695582496 + 2 Combine like terms: 1.695582496 + 2 = 3.695582496 x = 3.695582496 Simplifying x = 3.695582496

Subproblem 2

x + -2 = -1.695582496 Simplifying x + -2 = -1.695582496 Reorder the terms: -2 + x = -1.695582496 Solving -2 + x = -1.695582496 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -1.695582496 + 2 Combine like terms: -2 + 2 = 0 0 + x = -1.695582496 + 2 x = -1.695582496 + 2 Combine like terms: -1.695582496 + 2 = 0.304417504 x = 0.304417504 Simplifying x = 0.304417504

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.695582496, 0.304417504}

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