Answer:
√72 - √27 + 2·√8
√(9·4·2) - √(9·3) + 2·√(4·2)
3·2·√2 - 3·√3 + 2·2·√2
6·√2 - 3·√3 + 4·√2
10·√2 - 3·√3
The last answer is correct.
Step-by-step explanation:
