(16x^2)-21x+3=0

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Solution for (16x^2)-21x+3=0 equation:


Simplifying
(16x2) + -21x + 3 = 0

Reorder the terms:
3 + -21x + (16x2) = 0

Solving
3 + -21x + (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 + -1.3125x + x2 = 0

Move the constant term to the right:

Add '-0.1875' to each side of the equation.
0.1875 + -1.3125x + -0.1875 + x2 = 0 + -0.1875

Reorder the terms:
0.1875 + -0.1875 + -1.3125x + x2 = 0 + -0.1875

Combine like terms: 0.1875 + -0.1875 = 0.0000
0.0000 + -1.3125x + x2 = 0 + -0.1875
-1.3125x + x2 = 0 + -0.1875

Combine like terms: 0 + -0.1875 = -0.1875
-1.3125x + x2 = -0.1875

The x term is -1.3125x.  Take half its coefficient (-0.65625).
Square it (0.4306640625) and add it to both sides.

Add '0.4306640625' to each side of the equation.
-1.3125x + 0.4306640625 + x2 = -0.1875 + 0.4306640625

Reorder the terms:
0.4306640625 + -1.3125x + x2 = -0.1875 + 0.4306640625

Combine like terms: -0.1875 + 0.4306640625 = 0.2431640625
0.4306640625 + -1.3125x + x2 = 0.2431640625

Factor a perfect square on the left side:
((x) + -0.65625)((x) + -0.65625) = 0.2431640625

Calculate the square root of the right side: 0.493116682

Break this problem into two subproblems by setting 
((x) + -0.65625) equal to 0.493116682 and -0.493116682.

Subproblem 1

(x) + -0.65625 = 0.493116682 Simplifying (x) + -0.65625 = 0.493116682 x + -0.65625 = 0.493116682 Reorder the terms: -0.65625 + x = 0.493116682 Solving -0.65625 + x = 0.493116682 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.65625' to each side of the equation. -0.65625 + 0.65625 + x = 0.493116682 + 0.65625 Combine like terms: -0.65625 + 0.65625 = 0.00000 0.00000 + x = 0.493116682 + 0.65625 x = 0.493116682 + 0.65625 Combine like terms: 0.493116682 + 0.65625 = 1.149366682 x = 1.149366682 Simplifying x = 1.149366682

Subproblem 2

(x) + -0.65625 = -0.493116682 Simplifying (x) + -0.65625 = -0.493116682 x + -0.65625 = -0.493116682 Reorder the terms: -0.65625 + x = -0.493116682 Solving -0.65625 + x = -0.493116682 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.65625' to each side of the equation. -0.65625 + 0.65625 + x = -0.493116682 + 0.65625 Combine like terms: -0.65625 + 0.65625 = 0.00000 0.00000 + x = -0.493116682 + 0.65625 x = -0.493116682 + 0.65625 Combine like terms: -0.493116682 + 0.65625 = 0.163133318 x = 0.163133318 Simplifying x = 0.163133318

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.149366682, 0.163133318}

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