Question

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what is the answer??​

Answer 1

Answer:

1, 2 & 3 are rationals and 4 is irrational.

Step-by-step explanation:

1) root196 = 14 . So, it is a rational number.

2) 3/root2 × root18 = 3 × root9 = 3 × 3 = 9. So, it is a rational number.

3) The decimal expansion is non - terminating and repeating. So, it is rational number.

4) root7 is irrational. So, root7 + 2 is also irrational as the sum of a rational and an irrational is always irrational.