help me with this sum
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[tex] given\\(a^{4}-a^{3}+a^{2}-a+1)/a^{3}-2
\\a^{3}-2)a^{4}-a^{3}+a^{2}-a+1(a-1\\ \:\:\:
(-) a^{4} -2a\\\:\:\:
-a^{3}+a^{2}+a+1 \\\:\:\:
(-) -a^{3} +2\\\:\:\:
a^{2}+a-1 \\\:\:\:
(a^{4}-a^{3}+a^{2}-a+1)=(a-1)(a^{3}-2)+(a^{2}+a-1)\\[\tex]
Hope it helps
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