You can put this solution on YOUR website! 9x2 - 81 = 0
Divide thru by 9 to get:
9(x^2 - 9) =0
Divide thru by 9 and Factor:
(x-3)(x+3) = 0
x = -3 or x = 3
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n^2 - 25 = 0
Factor:
(n-5)(n+5) = 0
n = 5 or n = -5
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Cheers,
Stan H.
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