16x^2-27+8x=0

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Solution for 16x^2-27+8x=0 equation:


Simplifying
16x2 + -27 + 8x = 0

Reorder the terms:
-27 + 8x + 16x2 = 0

Solving
-27 + 8x + 16x2 = 0

Solving for variable 'x'.

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

Divide each side by '16'.
-1.6875 + 0.5x + x2 = 0

Move the constant term to the right:

Add '1.6875' to each side of the equation.
-1.6875 + 0.5x + 1.6875 + x2 = 0 + 1.6875

Reorder the terms:
-1.6875 + 1.6875 + 0.5x + x2 = 0 + 1.6875

Combine like terms: -1.6875 + 1.6875 = 0.0000
0.0000 + 0.5x + x2 = 0 + 1.6875
0.5x + x2 = 0 + 1.6875

Combine like terms: 0 + 1.6875 = 1.6875
0.5x + x2 = 1.6875

The x term is 0.5x.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5x + 0.0625 + x2 = 1.6875 + 0.0625

Reorder the terms:
0.0625 + 0.5x + x2 = 1.6875 + 0.0625

Combine like terms: 1.6875 + 0.0625 = 1.75
0.0625 + 0.5x + x2 = 1.75

Factor a perfect square on the left side:
(x + 0.25)(x + 0.25) = 1.75

Calculate the square root of the right side: 1.322875656

Break this problem into two subproblems by setting 
(x + 0.25) equal to 1.322875656 and -1.322875656.

Subproblem 1

x + 0.25 = 1.322875656 Simplifying x + 0.25 = 1.322875656 Reorder the terms: 0.25 + x = 1.322875656 Solving 0.25 + x = 1.322875656 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = 1.322875656 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = 1.322875656 + -0.25 x = 1.322875656 + -0.25 Combine like terms: 1.322875656 + -0.25 = 1.072875656 x = 1.072875656 Simplifying x = 1.072875656

Subproblem 2

x + 0.25 = -1.322875656 Simplifying x + 0.25 = -1.322875656 Reorder the terms: 0.25 + x = -1.322875656 Solving 0.25 + x = -1.322875656 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + x = -1.322875656 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + x = -1.322875656 + -0.25 x = -1.322875656 + -0.25 Combine like terms: -1.322875656 + -0.25 = -1.572875656 x = -1.572875656 Simplifying x = -1.572875656

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.072875656, -1.572875656}

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