Arectangle has the lenth of 10 and with of 4 . if both dimensins r doubled what does it affect the perimeter

For each expression use a property to write an equivalent expression.

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

How many terms does the polynomial x^2 y^2 have