30a^3-6a=

Solution for 30a^3-6a= equation:

Simplifying
30a3 + -6a = 0

Reorder the terms:
-6a + 30a3 = 0

Solving
-6a + 30a3 = 0

Solving for variable 'a'.

Factor out the Greatest Common Factor (GCF), '6a'.
6a(-1 + 5a2) = 0

Ignore the factor 6.
Subproblem 1
Set the factor 'a' equal to zero and attempt to solve:

Simplifying
a = 0

Solving
a = 0

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

Simplifying
a = 0
Subproblem 2
Set the factor '(-1 + 5a2)' equal to zero and attempt to solve:

Simplifying
-1 + 5a2 = 0

Solving
-1 + 5a2 = 0

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

Add '1' to each side of the equation.
-1 + 1 + 5a2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 5a2 = 0 + 1
5a2 = 0 + 1

Combine like terms: 0 + 1 = 1
5a2 = 1

Divide each side by '5'.
a2 = 0.2

Simplifying
a2 = 0.2

Take the square root of each side:
a = {-0.447213596, 0.447213596}
Solution
a = {0, -0.447213596, 0.447213596}