3x-1+8x^2(4)=

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Solution for 3x-1+8x^2(4)= equation:


Simplifying
3x + -1 + 8x2(4) = 0

Reorder the terms for easier multiplication:
3x + -1 + 8 * 4x2 = 0

Multiply 8 * 4
3x + -1 + 32x2 = 0

Reorder the terms:
-1 + 3x + 32x2 = 0

Solving
-1 + 3x + 32x2 = 0

Solving for variable 'x'.

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

Divide each side by '32'.
-0.03125 + 0.09375x + x2 = 0

Move the constant term to the right:

Add '0.03125' to each side of the equation.
-0.03125 + 0.09375x + 0.03125 + x2 = 0 + 0.03125

Reorder the terms:
-0.03125 + 0.03125 + 0.09375x + x2 = 0 + 0.03125

Combine like terms: -0.03125 + 0.03125 = 0.00000
0.00000 + 0.09375x + x2 = 0 + 0.03125
0.09375x + x2 = 0 + 0.03125

Combine like terms: 0 + 0.03125 = 0.03125
0.09375x + x2 = 0.03125

The x term is 0.09375x.  Take half its coefficient (0.046875).
Square it (0.002197265625) and add it to both sides.

Add '0.002197265625' to each side of the equation.
0.09375x + 0.002197265625 + x2 = 0.03125 + 0.002197265625

Reorder the terms:
0.002197265625 + 0.09375x + x2 = 0.03125 + 0.002197265625

Combine like terms: 0.03125 + 0.002197265625 = 0.033447265625
0.002197265625 + 0.09375x + x2 = 0.033447265625

Factor a perfect square on the left side:
(x + 0.046875)(x + 0.046875) = 0.033447265625

Calculate the square root of the right side: 0.182885936

Break this problem into two subproblems by setting 
(x + 0.046875) equal to 0.182885936 and -0.182885936.

Subproblem 1

x + 0.046875 = 0.182885936 Simplifying x + 0.046875 = 0.182885936 Reorder the terms: 0.046875 + x = 0.182885936 Solving 0.046875 + x = 0.182885936 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.046875' to each side of the equation. 0.046875 + -0.046875 + x = 0.182885936 + -0.046875 Combine like terms: 0.046875 + -0.046875 = 0.000000 0.000000 + x = 0.182885936 + -0.046875 x = 0.182885936 + -0.046875 Combine like terms: 0.182885936 + -0.046875 = 0.136010936 x = 0.136010936 Simplifying x = 0.136010936

Subproblem 2

x + 0.046875 = -0.182885936 Simplifying x + 0.046875 = -0.182885936 Reorder the terms: 0.046875 + x = -0.182885936 Solving 0.046875 + x = -0.182885936 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.046875' to each side of the equation. 0.046875 + -0.046875 + x = -0.182885936 + -0.046875 Combine like terms: 0.046875 + -0.046875 = 0.000000 0.000000 + x = -0.182885936 + -0.046875 x = -0.182885936 + -0.046875 Combine like terms: -0.182885936 + -0.046875 = -0.229760936 x = -0.229760936 Simplifying x = -0.229760936

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.136010936, -0.229760936}

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