Question

For a real number a, a + 0 = a.

For a real number a, a + (-a) = 1.

For a real numbers a and b, | a - b | = | b - a |.

For real numbers a, b, and c, a + (b ∙ c) = (a + b)(a + c).

For rational numbers a and b, is always a rational number.
true or false for each one

Answer 1

1) True
2) False
3) True
4) False

Answer 2

For rational numbers a and b, a/b is always a rational numbe ( true or false