-5n^2+15=0

Solution for -5n^2+15=0 equation:

Simplifying
-5n2 + 15 = 0

Reorder the terms:
15 + -5n2 = 0

Solving
15 + -5n2 = 0

Solving for variable 'n'.

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

Add '-15' to each side of the equation.
15 + -15 + -5n2 = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -5n2 = 0 + -15
-5n2 = 0 + -15

Combine like terms: 0 + -15 = -15
-5n2 = -15

Divide each side by '-5'.
n2 = 3

Simplifying
n2 = 3

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