Factorise:- x^9-y^9
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Answered by
20
Step-by-step explanation:
(x^3)^3-(y^3)^3
use a^3-b^3
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Answered by
6
Step-by-step explanation:
x^9-y^9
=(x^3)^3-(y^3)^3
=(x^3-y^3)^3+3×x^3×y^3(x^3-y^3)
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