3.14159265359x^2-x-38(3.14159265359)=0

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Solution for 3.14159265359x^2-x-38(3.14159265359)=0 equation:


Simplifying
3.14159265359x2 + -1x + -38(3.14159265359) = 0

Multiply -38 * 3.14159265359
3.14159265359x2 + -1x + -119.3805208 = 0

Reorder the terms:
-119.3805208 + -1x + 3.14159265359x2 = 0

Solving
-119.3805208 + -1x + 3.14159265359x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
3.14159265359 the coefficient of the squared term: 

Divide each side by '3.14159265359'.
-37.99999999 + -0.3183098862x + x2 = 0

Move the constant term to the right:

Add '37.99999999' to each side of the equation.
-37.99999999 + -0.3183098862x + 37.99999999 + x2 = 0 + 37.99999999

Reorder the terms:
-37.99999999 + 37.99999999 + -0.3183098862x + x2 = 0 + 37.99999999

Combine like terms: -37.99999999 + 37.99999999 = 0.00000000
0.00000000 + -0.3183098862x + x2 = 0 + 37.99999999
-0.3183098862x + x2 = 0 + 37.99999999

Combine like terms: 0 + 37.99999999 = 37.99999999
-0.3183098862x + x2 = 37.99999999

The x term is -0.3183098862x.  Take half its coefficient (-0.1591549431).
Square it (0.02533029591) and add it to both sides.

Add '0.02533029591' to each side of the equation.
-0.3183098862x + 0.02533029591 + x2 = 37.99999999 + 0.02533029591

Reorder the terms:
0.02533029591 + -0.3183098862x + x2 = 37.99999999 + 0.02533029591

Combine like terms: 37.99999999 + 0.02533029591 = 38.02533028591
0.02533029591 + -0.3183098862x + x2 = 38.02533028591

Factor a perfect square on the left side:
(x + -0.1591549431)(x + -0.1591549431) = 38.02533028591

Calculate the square root of the right side: 6.166468218

Break this problem into two subproblems by setting 
(x + -0.1591549431) equal to 6.166468218 and -6.166468218.

Subproblem 1

x + -0.1591549431 = 6.166468218 Simplifying x + -0.1591549431 = 6.166468218 Reorder the terms: -0.1591549431 + x = 6.166468218 Solving -0.1591549431 + x = 6.166468218 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1591549431' to each side of the equation. -0.1591549431 + 0.1591549431 + x = 6.166468218 + 0.1591549431 Combine like terms: -0.1591549431 + 0.1591549431 = 0.0000000000 0.0000000000 + x = 6.166468218 + 0.1591549431 x = 6.166468218 + 0.1591549431 Combine like terms: 6.166468218 + 0.1591549431 = 6.3256231611 x = 6.3256231611 Simplifying x = 6.3256231611

Subproblem 2

x + -0.1591549431 = -6.166468218 Simplifying x + -0.1591549431 = -6.166468218 Reorder the terms: -0.1591549431 + x = -6.166468218 Solving -0.1591549431 + x = -6.166468218 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1591549431' to each side of the equation. -0.1591549431 + 0.1591549431 + x = -6.166468218 + 0.1591549431 Combine like terms: -0.1591549431 + 0.1591549431 = 0.0000000000 0.0000000000 + x = -6.166468218 + 0.1591549431 x = -6.166468218 + 0.1591549431 Combine like terms: -6.166468218 + 0.1591549431 = -6.0073132749 x = -6.0073132749 Simplifying x = -6.0073132749

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.3256231611, -6.0073132749}

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