a to the power 3 +a- 3a to the power 2 -3
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Step-by-step explanation:
a^3+a-3a^2-3
=a^3-3a^2+a-3
=a^2(a-3)+1(a-3)
=(a^2+1)(a-3)
It is not mentioned in question what to find.
I factorise it.If you need to find zeros then evaluate it to zero.
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