9+(-2n)n=4

Solution for 9+(-2n)n=4 equation:

Simplifying
9 + (-2n) * n = 4

Remove parenthesis around (-2n)
9 + -2n * n = 4

Multiply n * n
9 + -2n2 = 4

Solving
9 + -2n2 = 4

Solving for variable 'n'.

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

Add '-9' to each side of the equation.
9 + -9 + -2n2 = 4 + -9

Combine like terms: 9 + -9 = 0
0 + -2n2 = 4 + -9
-2n2 = 4 + -9

Combine like terms: 4 + -9 = -5
-2n2 = -5

Divide each side by '-2'.
n2 = 2.5

Simplifying
n2 = 2.5

Take the square root of each side:
n = {-1.58113883, 1.58113883}