-145x^2+36x+4=0

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Solution for -145x^2+36x+4=0 equation:


Simplifying
-145x2 + 36x + 4 = 0

Reorder the terms:
4 + 36x + -145x2 = 0

Solving
4 + 36x + -145x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-145 the coefficient of the squared term: 

Divide each side by '-145'.
-0.0275862069 + -0.2482758621x + x2 = 0

Move the constant term to the right:

Add '0.0275862069' to each side of the equation.
-0.0275862069 + -0.2482758621x + 0.0275862069 + x2 = 0 + 0.0275862069

Reorder the terms:
-0.0275862069 + 0.0275862069 + -0.2482758621x + x2 = 0 + 0.0275862069

Combine like terms: -0.0275862069 + 0.0275862069 = 0.0000000000
0.0000000000 + -0.2482758621x + x2 = 0 + 0.0275862069
-0.2482758621x + x2 = 0 + 0.0275862069

Combine like terms: 0 + 0.0275862069 = 0.0275862069
-0.2482758621x + x2 = 0.0275862069

The x term is -0.2482758621x.  Take half its coefficient (-0.1241379311).
Square it (0.01541022594) and add it to both sides.

Add '0.01541022594' to each side of the equation.
-0.2482758621x + 0.01541022594 + x2 = 0.0275862069 + 0.01541022594

Reorder the terms:
0.01541022594 + -0.2482758621x + x2 = 0.0275862069 + 0.01541022594

Combine like terms: 0.0275862069 + 0.01541022594 = 0.04299643284
0.01541022594 + -0.2482758621x + x2 = 0.04299643284

Factor a perfect square on the left side:
(x + -0.1241379311)(x + -0.1241379311) = 0.04299643284

Calculate the square root of the right side: 0.207355812

Break this problem into two subproblems by setting 
(x + -0.1241379311) equal to 0.207355812 and -0.207355812.

Subproblem 1

x + -0.1241379311 = 0.207355812 Simplifying x + -0.1241379311 = 0.207355812 Reorder the terms: -0.1241379311 + x = 0.207355812 Solving -0.1241379311 + x = 0.207355812 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1241379311' to each side of the equation. -0.1241379311 + 0.1241379311 + x = 0.207355812 + 0.1241379311 Combine like terms: -0.1241379311 + 0.1241379311 = 0.0000000000 0.0000000000 + x = 0.207355812 + 0.1241379311 x = 0.207355812 + 0.1241379311 Combine like terms: 0.207355812 + 0.1241379311 = 0.3314937431 x = 0.3314937431 Simplifying x = 0.3314937431

Subproblem 2

x + -0.1241379311 = -0.207355812 Simplifying x + -0.1241379311 = -0.207355812 Reorder the terms: -0.1241379311 + x = -0.207355812 Solving -0.1241379311 + x = -0.207355812 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.1241379311' to each side of the equation. -0.1241379311 + 0.1241379311 + x = -0.207355812 + 0.1241379311 Combine like terms: -0.1241379311 + 0.1241379311 = 0.0000000000 0.0000000000 + x = -0.207355812 + 0.1241379311 x = -0.207355812 + 0.1241379311 Combine like terms: -0.207355812 + 0.1241379311 = -0.0832178809 x = -0.0832178809 Simplifying x = -0.0832178809

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.3314937431, -0.0832178809}

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