Question

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

Ответ:

$0,3\cdot 10^7+2,3\cdot 10^8=3\, 000\, 000+230\, 000\, 000=233\, 000\, 000=2,33\cdot 10^8\\\\ili\\\\0,3\cdot 10^7+2,3\cdot 10^8=10^7\cdot (0,3+2,3\cdot 10)=10^7\cdot (0,3+23)=\\\\=23,3\cdot 10^7=2,33\cdot 10^8$