Fireburst4
Fireburst4
12-11-2020
Mathematics
contestada
solve by factoring x^2 -9 =0
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LunarEclipses
LunarEclipses
12-11-2020
x = 3 and -3
X^2 - 9 = 0
(X+3)(X-3) = 0
X + 3 = 0
X = -3
X - 3 = 0
X = 3
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