Question

an integer multiplied by an integer is an integer

Answer 1

yes

Answer 2

always true or sometimes true or never true?

Answer 3

Do you have to prove that?

Answer 4

no

Answer 5

is it always true ?

Answer 6

Always true!

Answer 7

and what if its divide

Answer 8

and addition?

Answer 9

Well, when you divide integers, then it becomes not necessary for the result to be an integer.

Answer 10

then its sometimes true

Answer 11

You can solve this question by taking 5 different examples :

for multiplication :

9 (integer) * 8(integer) = 72 (integer)
1 (integer) * -2(integer) = -2 (integer)

for division :

1 (integer) / 1 (integer) = 1 (integer)
2(integer) / 3(integer) = 2/3 (NOT AN INTEGER - Rational number)

for addition

1 (integer) + 2 (integer) = 3 (integer)

-1 (integer) + 3 (integer) = 2 (integer)

Answer 12

and what about polynomials?

Answer 13

Thanks