3*3*3+b^2=30

Solution for 3*3*3+b^2=30 equation:

Simplifying
3 * 3 * 3 + b2 = 30

Multiply 3 * 3
9 * 3 + b2 = 30

Multiply 9 * 3
27 + b2 = 30

Solving
27 + b2 = 30

Solving for variable 'b'.

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

Add '-27' to each side of the equation.
27 + -27 + b2 = 30 + -27

Combine like terms: 27 + -27 = 0
0 + b2 = 30 + -27
b2 = 30 + -27

Combine like terms: 30 + -27 = 3
b2 = 3

Simplifying
b2 = 3

Take the square root of each side:
b = {-1.732050808, 1.732050808}