Question

помогите плиз!!!!!!!!!!!!!!!!!!​

Answer 1

Ответ:

1. 4.78 - 619 = 478100 - 619 = 78 + 4·100100 - 1 + 6·99 = 478100 - 559 = 478·9100·9 - 55·1009·100 = 4302900 - 5500900 = 4302 - 5500900 = -1198900 = - 599 · 2450 · 2 = - -599450 = - 1·450 + 149450 = -1149450 ≈ -1.3311111111111111

2.0.22 - 389 = 22100 - 389 = 22100 - 8 + 3·99 = 22100 - 359 = 22·9100·9 - 35·1009·100 = 198900 - 3500900 = 198 - 3500900 = -3302900 = - 1651 · 2450 · 2 = - -1651450 = - 3·450 + 301450 = -3301450 ≈ -3.6688888888888886