d^2-18d^2+81=0

Solution for d^2-18d^2+81=0 equation:

Simplifying
d2 + -18d2 + 81 = 0

Reorder the terms:
81 + d2 + -18d2 = 0

Combine like terms: d2 + -18d2 = -17d2
81 + -17d2 = 0

Solving
81 + -17d2 = 0

Solving for variable 'd'.

Move all terms containing d to the left, all other terms to the right.

Add '-81' to each side of the equation.
81 + -81 + -17d2 = 0 + -81

Combine like terms: 81 + -81 = 0
0 + -17d2 = 0 + -81
-17d2 = 0 + -81

Combine like terms: 0 + -81 = -81
-17d2 = -81

Divide each side by '-17'.
d2 = 4.764705882

Simplifying
d2 = 4.764705882

Take the square root of each side:
d = {-2.182820625, 2.182820625}