30z^2-23z+5=0

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Solution for 30z^2-23z+5=0 equation:


Simplifying
30z2 + -23z + 5 = 0

Reorder the terms:
5 + -23z + 30z2 = 0

Solving
5 + -23z + 30z2 = 0

Solving for variable 'z'.

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

Divide each side by '30'.
0.1666666667 + -0.7666666667z + z2 = 0

Move the constant term to the right:

Add '-0.1666666667' to each side of the equation.
0.1666666667 + -0.7666666667z + -0.1666666667 + z2 = 0 + -0.1666666667

Reorder the terms:
0.1666666667 + -0.1666666667 + -0.7666666667z + z2 = 0 + -0.1666666667

Combine like terms: 0.1666666667 + -0.1666666667 = 0.0000000000
0.0000000000 + -0.7666666667z + z2 = 0 + -0.1666666667
-0.7666666667z + z2 = 0 + -0.1666666667

Combine like terms: 0 + -0.1666666667 = -0.1666666667
-0.7666666667z + z2 = -0.1666666667

The z term is -0.7666666667z.  Take half its coefficient (-0.3833333334).
Square it (0.1469444445) and add it to both sides.

Add '0.1469444445' to each side of the equation.
-0.7666666667z + 0.1469444445 + z2 = -0.1666666667 + 0.1469444445

Reorder the terms:
0.1469444445 + -0.7666666667z + z2 = -0.1666666667 + 0.1469444445

Combine like terms: -0.1666666667 + 0.1469444445 = -0.0197222222
0.1469444445 + -0.7666666667z + z2 = -0.0197222222

Factor a perfect square on the left side:
(z + -0.3833333334)(z + -0.3833333334) = -0.0197222222

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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