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- August 24th 2007, 02:01 PM #1

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## I need help!!!

Hi ppl I really need help in some exercise!!!

it's about comparison.(what is smaller,bigger...)

1)Nth root seventeen ___ Nth root 6 + Nth root 3

2)Nth root seven + Nth root five ____ Nth root 2 + Nth root twelve

3) x+4= Nth root (inside of it: 3x^2+5x-4)

4) (x^2+3x)^2 -14(x^2 +3x) +40 = 0

5) (x+6/x)^2 -12(x+6/x)+35=0

plz help me!!!!!!! i will be grateful to the one who show mw how i need solve atleast one of those...

__p.s__

i solve(with your help,thank you!!!) all the exercise except number 3.help plz:]

- August 24th 2007, 02:38 PM #2

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- August 24th 2007, 02:41 PM #3

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- August 24th 2007, 04:32 PM #4

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Hello, katia15!

It's about comparison: less than or greater than.

positive interger .*any*

Let's test it for .

We have: .

Square both sides: .

And we have: .

Square both sides: .

Since , the original inequality is "less than".

Therefore: .

- August 25th 2007, 04:21 AM #5

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## thanks:)

hi i wanted to sat thank you for

**CaptainBlack**and.__soroban__

you helpes me a lot