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Simplifying
12n2 + -9 = 1191
Reorder the terms:
-9 + 12n2 = 1191
Solving
-9 + 12n2 = 1191
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 + 12n2 = 1191 + 9
Combine like terms: -9 + 9 = 0
0 + 12n2 = 1191 + 9
12n2 = 1191 + 9
Combine like terms: 1191 + 9 = 1200
12n2 = 1200
Divide each side by '12'.
n2 = 100
Simplifying
n2 = 100
Take the square root of each side:
n = {-10, 10}
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