starry13567
starry13567
24-07-2015
Mathematics
contestada
how do solve z^2-6z-27=0 by factoring?
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Аноним
Аноним
24-07-2015
z^2−6z−27=0
Factor left side of equation.
(z+3)(z−9)=0
Set factors equal to 0.
z+3=0 or z−9=0
z=−3 or z=9
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