2n^2+3-9=0

Solution for 2n^2+3-9=0 equation:

Simplifying
2n2 + 3 + -9 = 0

Reorder the terms:
3 + -9 + 2n2 = 0

Combine like terms: 3 + -9 = -6
-6 + 2n2 = 0

Solving
-6 + 2n2 = 0

Solving for variable 'n'.

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

Add '6' to each side of the equation.
-6 + 6 + 2n2 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + 2n2 = 0 + 6
2n2 = 0 + 6

Combine like terms: 0 + 6 = 6
2n2 = 6

Divide each side by '2'.
n2 = 3

Simplifying
n2 = 3

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