18. √242 − 2√98 + 3√32

Question

√242 = 11√2, √98 = 7√2, √32 = 4√2.

11√2 − 2 · 7√2 + 3 · 4√2 = 9√2.

Ответ: 9√2.

Accepted Answer

√242 = 11√2, √98 = 7√2, √32 = 4√2.

11√2 − 2 · 7√2 + 3 · 4√2 = 9√2.

Ответ: 9√2.