Question

РЕШИТЕ УМОЛЯЮ !!!!!!!!!!!!!!!!!!! 

Answer 1

otvetom budet -78
esli ewe est problem napiwite mne v lichku

Answer 2

eto formula a kvadrad minus b v kvadrate

Answer 3

budet 3-81

Answer 4

eto znachet -78

Answer 5

:)

Answer 6

спасибо!)