g-3=g*g

Solution for g-3=g*g equation:

Simplifying
g + -3 = g * g

Reorder the terms:
-3 + g = g * g

Multiply g * g
-3 + g = g2

Solving
-3 + g = g2

Solving for variable 'g'.

Combine like terms: g2 + -1g2 = 0
-3 + g + -1g2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
3 + -1g + g2 = 0

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + -1g + -3 + g2 = 0 + -3

Reorder the terms:
3 + -3 + -1g + g2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -1g + g2 = 0 + -3
-1g + g2 = 0 + -3

Combine like terms: 0 + -3 = -3
-1g + g2 = -3

The g term is g.  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.
-1g + 0.25 + g2 = -3 + 0.25

Reorder the terms:
0.25 + -1g + g2 = -3 + 0.25

Combine like terms: -3 + 0.25 = -2.75
0.25 + -1g + g2 = -2.75

Factor a perfect square on the left side:
(g + 0.5)(g + 0.5) = -2.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.