Which of the following statements is false?

select one:
a. the sum of two rational numbers is always rational.
b. the product of a nonzero rational number and an irrational number is always irrational.
c. the product of two rational numbers is always rational.
d. the sum of two irrational numbers is always rational.

think about it deeply and passionately about this property

i am sorry

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.

-2

7 - 9 = -2

reversed:

-2 + 9 = 7