12. a) 129 600 ni tub ko‘paytuvchilarga ajrating. b) Tajriba vaqtida otilgan o‘qning tezligi √129 600 m/s ga teng bo‘ldi. O‘q tezligini daraja ko‘rinishida yozing.

\(129600=1296\cdot100=(2^4\cdot3^4)(2^2\cdot5^2)=2^6\cdot3^4\cdot5^2\).

\(\sqrt{129600}=\sqrt{2^6\cdot3^4\cdot5^2}=2^3\cdot3^2\cdot5=360\).

Javob: a) \(129600=2^6\cdot3^4\cdot5^2\); b) 360 m/s.