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Simplifying
9n2 + 9 = 216
Reorder the terms:
9 + 9n2 = 216
Solving
9 + 9n2 = 216
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 + 9n2 = 216 + -9
Combine like terms: 9 + -9 = 0
0 + 9n2 = 216 + -9
9n2 = 216 + -9
Combine like terms: 216 + -9 = 207
9n2 = 207
Divide each side by '9'.
n2 = 23
Simplifying
n2 = 23
Take the square root of each side:
n = {-4.795831523, 4.795831523}
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