36x^2+8x-3=0

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Solution for 36x^2+8x-3=0 equation:


Simplifying
36x2 + 8x + -3 = 0

Reorder the terms:
-3 + 8x + 36x2 = 0

Solving
-3 + 8x + 36x2 = 0

Solving for variable 'x'.

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

Divide each side by '36'.
-0.08333333333 + 0.2222222222x + x2 = 0

Move the constant term to the right:

Add '0.08333333333' to each side of the equation.
-0.08333333333 + 0.2222222222x + 0.08333333333 + x2 = 0 + 0.08333333333

Reorder the terms:
-0.08333333333 + 0.08333333333 + 0.2222222222x + x2 = 0 + 0.08333333333

Combine like terms: -0.08333333333 + 0.08333333333 = 0.00000000000
0.00000000000 + 0.2222222222x + x2 = 0 + 0.08333333333
0.2222222222x + x2 = 0 + 0.08333333333

Combine like terms: 0 + 0.08333333333 = 0.08333333333
0.2222222222x + x2 = 0.08333333333

The x term is 0.2222222222x.  Take half its coefficient (0.1111111111).
Square it (0.01234567901) and add it to both sides.

Add '0.01234567901' to each side of the equation.
0.2222222222x + 0.01234567901 + x2 = 0.08333333333 + 0.01234567901

Reorder the terms:
0.01234567901 + 0.2222222222x + x2 = 0.08333333333 + 0.01234567901

Combine like terms: 0.08333333333 + 0.01234567901 = 0.09567901234
0.01234567901 + 0.2222222222x + x2 = 0.09567901234

Factor a perfect square on the left side:
(x + 0.1111111111)(x + 0.1111111111) = 0.09567901234

Calculate the square root of the right side: 0.309320242

Break this problem into two subproblems by setting 
(x + 0.1111111111) equal to 0.309320242 and -0.309320242.

Subproblem 1

x + 0.1111111111 = 0.309320242 Simplifying x + 0.1111111111 = 0.309320242 Reorder the terms: 0.1111111111 + x = 0.309320242 Solving 0.1111111111 + x = 0.309320242 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1111111111' to each side of the equation. 0.1111111111 + -0.1111111111 + x = 0.309320242 + -0.1111111111 Combine like terms: 0.1111111111 + -0.1111111111 = 0.0000000000 0.0000000000 + x = 0.309320242 + -0.1111111111 x = 0.309320242 + -0.1111111111 Combine like terms: 0.309320242 + -0.1111111111 = 0.1982091309 x = 0.1982091309 Simplifying x = 0.1982091309

Subproblem 2

x + 0.1111111111 = -0.309320242 Simplifying x + 0.1111111111 = -0.309320242 Reorder the terms: 0.1111111111 + x = -0.309320242 Solving 0.1111111111 + x = -0.309320242 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1111111111' to each side of the equation. 0.1111111111 + -0.1111111111 + x = -0.309320242 + -0.1111111111 Combine like terms: 0.1111111111 + -0.1111111111 = 0.0000000000 0.0000000000 + x = -0.309320242 + -0.1111111111 x = -0.309320242 + -0.1111111111 Combine like terms: -0.309320242 + -0.1111111111 = -0.4204313531 x = -0.4204313531 Simplifying x = -0.4204313531

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.1982091309, -0.4204313531}

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