Question

10. Product of two rational numbers with same sign.

1. Multiplicative identity of rational numbers.

2. Property of rational numbers which states that for any rational number a and b, a + b, a –b,

a x b, a/b are rational numbers.​

Answer 1

Answer:

Associative property of rational number under addition is given by following:

a+(b+c)=(a+b)+c

where, a,b and c are rational numbers.

Hence, B is the correct option

Answer 2

Answer:

1. it's 1

2. a² - b²

Step-by-step explanation:

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