12z^2+7z+5=0

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Solution for 12z^2+7z+5=0 equation:


Simplifying
12z2 + 7z + 5 = 0

Reorder the terms:
5 + 7z + 12z2 = 0

Solving
5 + 7z + 12z2 = 0

Solving for variable 'z'.

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

Divide each side by '12'.
0.4166666667 + 0.5833333333z + z2 = 0

Move the constant term to the right:

Add '-0.4166666667' to each side of the equation.
0.4166666667 + 0.5833333333z + -0.4166666667 + z2 = 0 + -0.4166666667

Reorder the terms:
0.4166666667 + -0.4166666667 + 0.5833333333z + z2 = 0 + -0.4166666667

Combine like terms: 0.4166666667 + -0.4166666667 = 0.0000000000
0.0000000000 + 0.5833333333z + z2 = 0 + -0.4166666667
0.5833333333z + z2 = 0 + -0.4166666667

Combine like terms: 0 + -0.4166666667 = -0.4166666667
0.5833333333z + z2 = -0.4166666667

The z term is 0.5833333333z.  Take half its coefficient (0.2916666667).
Square it (0.08506944446) and add it to both sides.

Add '0.08506944446' to each side of the equation.
0.5833333333z + 0.08506944446 + z2 = -0.4166666667 + 0.08506944446

Reorder the terms:
0.08506944446 + 0.5833333333z + z2 = -0.4166666667 + 0.08506944446

Combine like terms: -0.4166666667 + 0.08506944446 = -0.33159722224
0.08506944446 + 0.5833333333z + z2 = -0.33159722224

Factor a perfect square on the left side:
(z + 0.2916666667)(z + 0.2916666667) = -0.33159722224

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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