16x^2-14x-3=0

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Solution for 16x^2-14x-3=0 equation:


Simplifying
16x2 + -14x + -3 = 0

Reorder the terms:
-3 + -14x + 16x2 = 0

Solving
-3 + -14x + 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'.
-0.1875 + -0.875x + x2 = 0

Move the constant term to the right:

Add '0.1875' to each side of the equation.
-0.1875 + -0.875x + 0.1875 + x2 = 0 + 0.1875

Reorder the terms:
-0.1875 + 0.1875 + -0.875x + x2 = 0 + 0.1875

Combine like terms: -0.1875 + 0.1875 = 0.0000
0.0000 + -0.875x + x2 = 0 + 0.1875
-0.875x + x2 = 0 + 0.1875

Combine like terms: 0 + 0.1875 = 0.1875
-0.875x + x2 = 0.1875

The x term is -0.875x.  Take half its coefficient (-0.4375).
Square it (0.19140625) and add it to both sides.

Add '0.19140625' to each side of the equation.
-0.875x + 0.19140625 + x2 = 0.1875 + 0.19140625

Reorder the terms:
0.19140625 + -0.875x + x2 = 0.1875 + 0.19140625

Combine like terms: 0.1875 + 0.19140625 = 0.37890625
0.19140625 + -0.875x + x2 = 0.37890625

Factor a perfect square on the left side:
(x + -0.4375)(x + -0.4375) = 0.37890625

Calculate the square root of the right side: 0.615553613

Break this problem into two subproblems by setting 
(x + -0.4375) equal to 0.615553613 and -0.615553613.

Subproblem 1

x + -0.4375 = 0.615553613 Simplifying x + -0.4375 = 0.615553613 Reorder the terms: -0.4375 + x = 0.615553613 Solving -0.4375 + x = 0.615553613 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4375' to each side of the equation. -0.4375 + 0.4375 + x = 0.615553613 + 0.4375 Combine like terms: -0.4375 + 0.4375 = 0.0000 0.0000 + x = 0.615553613 + 0.4375 x = 0.615553613 + 0.4375 Combine like terms: 0.615553613 + 0.4375 = 1.053053613 x = 1.053053613 Simplifying x = 1.053053613

Subproblem 2

x + -0.4375 = -0.615553613 Simplifying x + -0.4375 = -0.615553613 Reorder the terms: -0.4375 + x = -0.615553613 Solving -0.4375 + x = -0.615553613 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4375' to each side of the equation. -0.4375 + 0.4375 + x = -0.615553613 + 0.4375 Combine like terms: -0.4375 + 0.4375 = 0.0000 0.0000 + x = -0.615553613 + 0.4375 x = -0.615553613 + 0.4375 Combine like terms: -0.615553613 + 0.4375 = -0.178053613 x = -0.178053613 Simplifying x = -0.178053613

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.053053613, -0.178053613}

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