1) 1,1:4,4=11:44=1:4=0,25
2)0,25*2,5=0,625
<span>5х-9(2+х)<-8х-6
5x-18-9x<-8x-6
4x<12
x<3 x∈(-∞;3)
9х-5(-7+4х)<-9х+10
9x+35-20x<-9x+10
2x>25
x>12.5 x∈(12.5;+∞)</span>
1. ∛24=∛(8*3)=∛8*∛3=∛2³ *∛3=2∛3
2. (√x)^(1/2) - это корень 4-й степени
(√1825)^(1/2)=(√625*3)^(1/2)=(√625)^(1/2)*(√3)^(1/2)=(√5⁴)^(1/2) *(√3)^(1/2)=5*(√3)^(1/2)
3. (√243)^(1/2)=(√81*3)^(1/2)=(√81)^(1/2)*(√3)^(1/2)=(√3)^(1/2)*(√3)^(1/2)=3*(√3)^(1/2)
4. а^(1/5) корень 5-й степени
160^(1/5)=(32*5)^(1/5)=32^(1/5)*5^(1/5)=(2⁵)^(1/5)*5^(1/5)=2*5^(1/5)