1) ( 3 ^ 2 ) ^ - 6 = 3 ^ - 12
2) ( 3 ^ 3 ) ^ 5 = 3 ^ 15
3) 3 ^ - 12 • 3 ^ 15 = 3 ^ 3
4) 3 ^ 3 : 3 ^ 4 = 3 ^ - 1 = 1/3
Ответ 1/3
Sбок = 2piRH=pi*D*H -> H=Sбок/piD=40pi/pi/5=8
3x(3x+7)-(3x+1)²=9x²+21x-9x²-6x-1=15x-1
<span>3) √0,9=0,3..................</span>