36z^2+32z+5=0

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Solution for 36z^2+32z+5=0 equation:


Simplifying
36z2 + 32z + 5 = 0

Reorder the terms:
5 + 32z + 36z2 = 0

Solving
5 + 32z + 36z2 = 0

Solving for variable 'z'.

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

Divide each side by '36'.
0.1388888889 + 0.8888888889z + z2 = 0

Move the constant term to the right:

Add '-0.1388888889' to each side of the equation.
0.1388888889 + 0.8888888889z + -0.1388888889 + z2 = 0 + -0.1388888889

Reorder the terms:
0.1388888889 + -0.1388888889 + 0.8888888889z + z2 = 0 + -0.1388888889

Combine like terms: 0.1388888889 + -0.1388888889 = 0.0000000000
0.0000000000 + 0.8888888889z + z2 = 0 + -0.1388888889
0.8888888889z + z2 = 0 + -0.1388888889

Combine like terms: 0 + -0.1388888889 = -0.1388888889
0.8888888889z + z2 = -0.1388888889

The z term is 0.8888888889z.  Take half its coefficient (0.4444444445).
Square it (0.1975308642) and add it to both sides.

Add '0.1975308642' to each side of the equation.
0.8888888889z + 0.1975308642 + z2 = -0.1388888889 + 0.1975308642

Reorder the terms:
0.1975308642 + 0.8888888889z + z2 = -0.1388888889 + 0.1975308642

Combine like terms: -0.1388888889 + 0.1975308642 = 0.0586419753
0.1975308642 + 0.8888888889z + z2 = 0.0586419753

Factor a perfect square on the left side:
(z + 0.4444444445)(z + 0.4444444445) = 0.0586419753

Calculate the square root of the right side: 0.242161052

Break this problem into two subproblems by setting 
(z + 0.4444444445) equal to 0.242161052 and -0.242161052.

Subproblem 1

z + 0.4444444445 = 0.242161052 Simplifying z + 0.4444444445 = 0.242161052 Reorder the terms: 0.4444444445 + z = 0.242161052 Solving 0.4444444445 + z = 0.242161052 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-0.4444444445' to each side of the equation. 0.4444444445 + -0.4444444445 + z = 0.242161052 + -0.4444444445 Combine like terms: 0.4444444445 + -0.4444444445 = 0.0000000000 0.0000000000 + z = 0.242161052 + -0.4444444445 z = 0.242161052 + -0.4444444445 Combine like terms: 0.242161052 + -0.4444444445 = -0.2022833925 z = -0.2022833925 Simplifying z = -0.2022833925

Subproblem 2

z + 0.4444444445 = -0.242161052 Simplifying z + 0.4444444445 = -0.242161052 Reorder the terms: 0.4444444445 + z = -0.242161052 Solving 0.4444444445 + z = -0.242161052 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-0.4444444445' to each side of the equation. 0.4444444445 + -0.4444444445 + z = -0.242161052 + -0.4444444445 Combine like terms: 0.4444444445 + -0.4444444445 = 0.0000000000 0.0000000000 + z = -0.242161052 + -0.4444444445 z = -0.242161052 + -0.4444444445 Combine like terms: -0.242161052 + -0.4444444445 = -0.6866054965 z = -0.6866054965 Simplifying z = -0.6866054965

Solution

The solution to the problem is based on the solutions from the subproblems. z = {-0.2022833925, -0.6866054965}

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