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# Surds- equations and inequalities involving surds watch

1. Ok I understand everything about surds (yes everything!) But this is 1 thing I dont get.

I know how to solve an inequality involving a surd but what I get dont is why and how the inequality sign changes?

I.e

in this textbook it goes from

root3 +5/ 4root3+2 > x

but then underneath it says

x< root3 +5/ 4root3+2 * root3 +5/ 4root3-2

what I dont get is why has the inequality sign just reverseD?

Thanks!
2. If then ; that's all they've done.
3. (Original post by nuodai)
If then ; that's all they've done.
True - is it wrong that I still remember my primary 3 teacher telling me that the sign is a crocodile which eats the bigger number?

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