6
(8x-41)/(x²-25)-1≤0
(8x-41-x²+25)/(x²-25)≤0
(x²-8x+16)/(x²-25)≥0
(x-4)²/(x-5)9x+5)≥0
x=4 x=5 x=-5
+ _ _ +
------------(-5)-----------[4]-----------(5)--------------
x<-5 U x>5 U x=4
|x|<10⇒-10<x<10<br>x∈(-10;-5) U (5;10) U {4}
8
0,(3)=1/3
x=0,(3)⇒10x=3,(3)⇒9x=3,(3)-0,(3)=3⇒x=3/9=1/3
------------------------------------
∛8+∛(4*16)=2+∛64=2+4=6