36 243:(82+73)+210*345:3=24383 128/155
1)82+73=155
2)36243:155=233 128/155
3)210*345=72450
4)72450:3=24150
5)24150+233 128/155=24383 128/155
У в кубе - 2 При у=6
6³ - 2 = (6*6*6) 216 - 2 = 214
<span>х² +9х - 36 =0
D=b</span>²-4ac=81+144=225
x1=-b+√D/2a=-9+15/2=6/2=3
x2=-b-√D/2a=-9-15/2=-24/2=-12
3+(-12)=-9
Ответ: -9