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Simplifying
9 + -4n2 = 0
Solving
9 + -4n2 = 0
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 + -4n2 = 0 + -9
Combine like terms: 9 + -9 = 0
0 + -4n2 = 0 + -9
-4n2 = 0 + -9
Combine like terms: 0 + -9 = -9
-4n2 = -9
Divide each side by '-4'.
n2 = 2.25
Simplifying
n2 = 2.25
Take the square root of each side:
n = {-1.5, 1.5}
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