You keep the same sign. So:-
4 + 4 = 8 and
--4 + -4 = -8
Answer:
is a factor of 
Step-by-step explanation:
is a factor of 
We will prove this with the help of principal of mathematical induction.
For n = 1,
is a factor
, which is true.
Let the given statement be true for n = k that is
is a factor of
.
Thus,
can be written equal to
, where y is an integer.
Now, we will prove that the given statement is true for n = k+1

Thus,
is divisible by
.
Hence, by principle of mathematical induction, the given statement is true for all natural numbers,n.
Answer:
211.1
Step-by-step explanation:
3 isn't greater than or equal to 5 so it will not round up to 2 so your answer will be 211.1