Question

Упростите 5√10(8-9√40)-13√90

Answer 1

$5 sqrt{10} times (8 - 9 sqrt{40)} - 13 sqrt{90} = 40 sqrt{10} - 45 sqrt{400} - 13 sqrt{90} = 40 sqrt{10} - 900 - 39 sqrt{10} = 1 sqrt{10} - 900$

Answer 2

Сяу, моя лавка))

Answer 3

Что?