Answer:
Choice (3)
is correct.
Step-by-step explanation:
Given expression is 
Now we need to simplify this and check which of the given choices best match with it.


{using formula
}
{using formula
}


{using formula
}
Hence choice (3)
is correct.
Answer:
74 i think
Step-by-step explanation:
It will need to be 9 as 27 by 8 is 216 and 23 by 9 is 207 and the you subtract 207 from 216 and get 9
The answer is 7x^3 - x - 6