X²>9
x²-9>0
(x-3)(x+3)>0
+ - +
---------------(-3)-------------(3)---------------
Ответ 2) x<-3; x>3
1) 6754 - 5897 = 857
2) 672 : 4 = 168
3) 857 • 3 = 2571
4) 800304 - 672 = 799632
5) 799632 - 168 = 799464
6) 799464 + 2571 = 802035
42-2×2×√ 42+4=42-24√6+4=46-24√6