8 - 2x ≥ 0
2x ≤ 8
x ≤ 4
( - ∞ ; 4 ]
<span>((2^0.5)^(-0.5))*(0.5)^(-1.25). = 2^(-1/4)* (1/2)^(-5/4) = 2^(-1/4) *2^(5/4) = 2^(5/4-1/4)=2^(4/4)=2^1=2</span>
1)6цел2/3+2цел4/15=8цел14/15
2)8цел14/15+5цел1/2=13цел28+15/30=13цел43/30=14цел13/30
3)433/30:1/15=433/30:2/30=433/30*30/2=433/2=216цел1/2
Посмотри ответ во вложении).