SOLUTION: please help me i need help 9x2 - 81 = 0 n2

SOLUTION: please help me i need help 9x2 - 81 = 0 n2 - 25 = 0

Question 185044This question is from textbook
: please help me i need help
9x2 - 81 = 0
n2 - 25 = 0 This question is from textbook

Answer by stanbon(75887) (Show Source): 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
-------------------------
n^2 - 25 = 0
Factor:
(n-5)(n+5) = 0
n = 5 or n = -5
==================
Cheers,
Stan H.

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