Question

which of the following is a factor of
${x}^{3} - {y}^{3} - ( x - y)^{3}$
a)
$3xy$
b)
${x}^{2} + {y}^{2} + xy$
c)
${x}^{2} + {y}^{2} - xy$
d)
${x}^{2} + {y}^{2} - 2xy$

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Answer 1

Answer:

I think answer (b) is the correct answer