factorise x³+y³-x-y
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x3+y3-x-y
cancel one x and one y
=x2+y2
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33
Answer:
(x+y) [ x²-xy+y² - 1]
Step-by-step explanation:
x³+y³-x-y
= (x+y)(x²-xy+y²) - (x+y)
= (x+y) [ x²-xy+y² - 1]
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