Step-by-step explanation:
3√8 is irrational number, and
2√18 is also irrational number
3√8 + 2√18 =
3×2√2 + 2×3√2 =
6√2 + 6√2 = 12√2
so, 12√2 is irrational number.
the correct answer is
A. the sum of two irrational numbers is irrational.
