-3z^2+3z=23

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Solution for -3z^2+3z=23 equation:


Simplifying
-3z2 + 3z = 23

Reorder the terms:
3z + -3z2 = 23

Solving
3z + -3z2 = 23

Solving for variable 'z'.

Reorder the terms:
-23 + 3z + -3z2 = 23 + -23

Combine like terms: 23 + -23 = 0
-23 + 3z + -3z2 = 0

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
7.666666667 + -1z + z2 = 0

Move the constant term to the right:

Add '-7.666666667' to each side of the equation.
7.666666667 + -1z + -7.666666667 + z2 = 0 + -7.666666667

Reorder the terms:
7.666666667 + -7.666666667 + -1z + z2 = 0 + -7.666666667

Combine like terms: 7.666666667 + -7.666666667 = 0.000000000
0.000000000 + -1z + z2 = 0 + -7.666666667
-1z + z2 = 0 + -7.666666667

Combine like terms: 0 + -7.666666667 = -7.666666667
-1z + z2 = -7.666666667

The z term is -1z.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1z + 0.25 + z2 = -7.666666667 + 0.25

Reorder the terms:
0.25 + -1z + z2 = -7.666666667 + 0.25

Combine like terms: -7.666666667 + 0.25 = -7.416666667
0.25 + -1z + z2 = -7.416666667

Factor a perfect square on the left side:
(z + -0.5)(z + -0.5) = -7.416666667

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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