Lejchiececoopy Lejchiececoopy

23-11-2016
Mathematics

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Which is a factor of z3 - z2 - 9z + 9?

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tibboyz123 tibboyz123

27-11-2016

z²(z-1)-9(z-1)
= (z²-9)(z-1)
= (z+3)(z-3)(z-1)

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