18a^2+21=0

Solution for 18a^2+21=0 equation:

Simplifying
18a2 + 21 = 0

Reorder the terms:
21 + 18a2 = 0

Solving
21 + 18a2 = 0

Solving for variable 'a'.

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

Add '-21' to each side of the equation.
21 + -21 + 18a2 = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 18a2 = 0 + -21
18a2 = 0 + -21

Combine like terms: 0 + -21 = -21
18a2 = -21

Divide each side by '18'.
a2 = -1.166666667

Simplifying
a2 = -1.166666667

Reorder the terms:
1.166666667 + a2 = -1.166666667 + 1.166666667

Combine like terms: -1.166666667 + 1.166666667 = 0.000000000
1.166666667 + a2 = 0.000000000

The solution to this equation could not be determined.