Question

solve x^3 is less than 25x

Answer 1

x^3 < 25 x
x^3 - 25 x < 0

x (x^2 - 25) < 0

for x > = 5, x^2 - 25 > = 0 and x too will be > = 0, so x (x^2 - 25) > = 0

for x = < -5, x^2 - 25 > = 0 and x < = 0, so x (x^2 - 25) < = 0.

Your answer: x < - 5.

Answer 2

Not one of my possible answers.

Answer 3

Really? What's the answer in the book?

Answer 4

1)-5<x<0 or x>5 ,/ 2) -5<x<5 /3) x<-5 orx>5 /4) x<-5or 0<x<5

Answer 5

Or x >0 and x <5.

Answer 6

4) x<-5or 0<x<5

Answer 7

Thanks

Answer 8

You're welcome. :)