14z^2-16z+15=0

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Solution for 14z^2-16z+15=0 equation:


Simplifying
14z2 + -16z + 15 = 0

Reorder the terms:
15 + -16z + 14z2 = 0

Solving
15 + -16z + 14z2 = 0

Solving for variable 'z'.

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

Divide each side by '14'.
1.071428571 + -1.142857143z + z2 = 0

Move the constant term to the right:

Add '-1.071428571' to each side of the equation.
1.071428571 + -1.142857143z + -1.071428571 + z2 = 0 + -1.071428571

Reorder the terms:
1.071428571 + -1.071428571 + -1.142857143z + z2 = 0 + -1.071428571

Combine like terms: 1.071428571 + -1.071428571 = 0.000000000
0.000000000 + -1.142857143z + z2 = 0 + -1.071428571
-1.142857143z + z2 = 0 + -1.071428571

Combine like terms: 0 + -1.071428571 = -1.071428571
-1.142857143z + z2 = -1.071428571

The z term is -1.142857143z.  Take half its coefficient (-0.5714285715).
Square it (0.3265306123) and add it to both sides.

Add '0.3265306123' to each side of the equation.
-1.142857143z + 0.3265306123 + z2 = -1.071428571 + 0.3265306123

Reorder the terms:
0.3265306123 + -1.142857143z + z2 = -1.071428571 + 0.3265306123

Combine like terms: -1.071428571 + 0.3265306123 = -0.7448979587
0.3265306123 + -1.142857143z + z2 = -0.7448979587

Factor a perfect square on the left side:
(z + -0.5714285715)(z + -0.5714285715) = -0.7448979587

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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