16x^2-19x-12=0

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Solution for 16x^2-19x-12=0 equation:


Simplifying
16x2 + -19x + -12 = 0

Reorder the terms:
-12 + -19x + 16x2 = 0

Solving
-12 + -19x + 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'.
-0.75 + -1.1875x + x2 = 0

Move the constant term to the right:

Add '0.75' to each side of the equation.
-0.75 + -1.1875x + 0.75 + x2 = 0 + 0.75

Reorder the terms:
-0.75 + 0.75 + -1.1875x + x2 = 0 + 0.75

Combine like terms: -0.75 + 0.75 = 0.00
0.00 + -1.1875x + x2 = 0 + 0.75
-1.1875x + x2 = 0 + 0.75

Combine like terms: 0 + 0.75 = 0.75
-1.1875x + x2 = 0.75

The x term is -1.1875x.  Take half its coefficient (-0.59375).
Square it (0.3525390625) and add it to both sides.

Add '0.3525390625' to each side of the equation.
-1.1875x + 0.3525390625 + x2 = 0.75 + 0.3525390625

Reorder the terms:
0.3525390625 + -1.1875x + x2 = 0.75 + 0.3525390625

Combine like terms: 0.75 + 0.3525390625 = 1.1025390625
0.3525390625 + -1.1875x + x2 = 1.1025390625

Factor a perfect square on the left side:
(x + -0.59375)(x + -0.59375) = 1.1025390625

Calculate the square root of the right side: 1.050018601

Break this problem into two subproblems by setting 
(x + -0.59375) equal to 1.050018601 and -1.050018601.

Subproblem 1

x + -0.59375 = 1.050018601 Simplifying x + -0.59375 = 1.050018601 Reorder the terms: -0.59375 + x = 1.050018601 Solving -0.59375 + x = 1.050018601 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.59375' to each side of the equation. -0.59375 + 0.59375 + x = 1.050018601 + 0.59375 Combine like terms: -0.59375 + 0.59375 = 0.00000 0.00000 + x = 1.050018601 + 0.59375 x = 1.050018601 + 0.59375 Combine like terms: 1.050018601 + 0.59375 = 1.643768601 x = 1.643768601 Simplifying x = 1.643768601

Subproblem 2

x + -0.59375 = -1.050018601 Simplifying x + -0.59375 = -1.050018601 Reorder the terms: -0.59375 + x = -1.050018601 Solving -0.59375 + x = -1.050018601 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.59375' to each side of the equation. -0.59375 + 0.59375 + x = -1.050018601 + 0.59375 Combine like terms: -0.59375 + 0.59375 = 0.00000 0.00000 + x = -1.050018601 + 0.59375 x = -1.050018601 + 0.59375 Combine like terms: -1.050018601 + 0.59375 = -0.456268601 x = -0.456268601 Simplifying x = -0.456268601

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.643768601, -0.456268601}

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