8x^2+1=12x

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Solution for 8x^2+1=12x equation:


Simplifying
8x2 + 1 = 12x

Reorder the terms:
1 + 8x2 = 12x

Solving
1 + 8x2 = 12x

Solving for variable 'x'.

Reorder the terms:
1 + -12x + 8x2 = 12x + -12x

Combine like terms: 12x + -12x = 0
1 + -12x + 8x2 = 0

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

Divide each side by '8'.
0.125 + -1.5x + x2 = 0

Move the constant term to the right:

Add '-0.125' to each side of the equation.
0.125 + -1.5x + -0.125 + x2 = 0 + -0.125

Reorder the terms:
0.125 + -0.125 + -1.5x + x2 = 0 + -0.125

Combine like terms: 0.125 + -0.125 = 0.000
0.000 + -1.5x + x2 = 0 + -0.125
-1.5x + x2 = 0 + -0.125

Combine like terms: 0 + -0.125 = -0.125
-1.5x + x2 = -0.125

The x term is -1.5x.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5x + 0.5625 + x2 = -0.125 + 0.5625

Reorder the terms:
0.5625 + -1.5x + x2 = -0.125 + 0.5625

Combine like terms: -0.125 + 0.5625 = 0.4375
0.5625 + -1.5x + x2 = 0.4375

Factor a perfect square on the left side:
(x + -0.75)(x + -0.75) = 0.4375

Calculate the square root of the right side: 0.661437828

Break this problem into two subproblems by setting 
(x + -0.75) equal to 0.661437828 and -0.661437828.

Subproblem 1

x + -0.75 = 0.661437828 Simplifying x + -0.75 = 0.661437828 Reorder the terms: -0.75 + x = 0.661437828 Solving -0.75 + x = 0.661437828 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = 0.661437828 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = 0.661437828 + 0.75 x = 0.661437828 + 0.75 Combine like terms: 0.661437828 + 0.75 = 1.411437828 x = 1.411437828 Simplifying x = 1.411437828

Subproblem 2

x + -0.75 = -0.661437828 Simplifying x + -0.75 = -0.661437828 Reorder the terms: -0.75 + x = -0.661437828 Solving -0.75 + x = -0.661437828 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = -0.661437828 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = -0.661437828 + 0.75 x = -0.661437828 + 0.75 Combine like terms: -0.661437828 + 0.75 = 0.088562172 x = 0.088562172 Simplifying x = 0.088562172

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.411437828, 0.088562172}

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