16x^2-48x-27=0

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Solution for 16x^2-48x-27=0 equation:


Simplifying
16x2 + -48x + -27 = 0

Reorder the terms:
-27 + -48x + 16x2 = 0

Solving
-27 + -48x + 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 + -3x + x2 = 0

Move the constant term to the right:

Add '1.6875' to each side of the equation.
-1.6875 + -3x + 1.6875 + x2 = 0 + 1.6875

Reorder the terms:
-1.6875 + 1.6875 + -3x + x2 = 0 + 1.6875

Combine like terms: -1.6875 + 1.6875 = 0.0000
0.0000 + -3x + x2 = 0 + 1.6875
-3x + x2 = 0 + 1.6875

Combine like terms: 0 + 1.6875 = 1.6875
-3x + x2 = 1.6875

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 1.6875 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 1.6875 + 2.25

Combine like terms: 1.6875 + 2.25 = 3.9375
2.25 + -3x + x2 = 3.9375

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 3.9375

Calculate the square root of the right side: 1.984313483

Break this problem into two subproblems by setting 
(x + -1.5) equal to 1.984313483 and -1.984313483.

Subproblem 1

x + -1.5 = 1.984313483 Simplifying x + -1.5 = 1.984313483 Reorder the terms: -1.5 + x = 1.984313483 Solving -1.5 + x = 1.984313483 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 1.984313483 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 1.984313483 + 1.5 x = 1.984313483 + 1.5 Combine like terms: 1.984313483 + 1.5 = 3.484313483 x = 3.484313483 Simplifying x = 3.484313483

Subproblem 2

x + -1.5 = -1.984313483 Simplifying x + -1.5 = -1.984313483 Reorder the terms: -1.5 + x = -1.984313483 Solving -1.5 + x = -1.984313483 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -1.984313483 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -1.984313483 + 1.5 x = -1.984313483 + 1.5 Combine like terms: -1.984313483 + 1.5 = -0.484313483 x = -0.484313483 Simplifying x = -0.484313483

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.484313483, -0.484313483}

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