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Simplifying
(n2 + -49) = 0
Reorder the terms:
(-49 + n2) = 0
Remove parenthesis around (-49 + n2)
-49 + n2 = 0
Solving
-49 + n2 = 0
Solving for variable 'n'.
Move all terms containing n to the left, all other terms to the right.
Add '49' to each side of the equation.
-49 + 49 + n2 = 0 + 49
Combine like terms: -49 + 49 = 0
0 + n2 = 0 + 49
n2 = 0 + 49
Combine like terms: 0 + 49 = 49
n2 = 49
Simplifying
n2 = 49
Take the square root of each side:
n = {-7, 7}
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