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http://screencast.com/t/Q0eyWYsQ

I'm pretty sure I have the answer, but I'm not sure yet. What lengths did you get for KM and KN?

for KM i got 27 and KN i got 15

Give me a minute to see if I was correct.

okay

what iis herons formula? can u show the woking?

but the solution actually is 16/65...according to the markin gsolution...hmm

Could you briefly explain to me how you got the length of KN?

Definitely no mistakes there. That means that I'm pretty sure it's a typo in the book.

just check if ur answer is wrong, coz it has to be 16/65

okay can u help in another one..its algebra?

\[\frac{x^{2}}{5} + \frac{5}{x} = \frac{1}{2}x +3\]
can u equal them so that one side will have 0

can u do it, im stuggling like showing a working

well how did u get 2x^3 + 50?

any other methods? to do that algebra?

any other easy method, because i can remembr once i did it in an easy way?

it is just 1 mark question?

yep?

Hallo?

no i mean, both the equations should be simplified and be equal = 0

okay

how did u get 65/16 in the first place

how did u get 9/4?

\[\frac{27}{12}=\frac{9}{4}\]I just simplified the ratio between KM and NM

oh okay thats the point..

Yup. I should have seen that earlier :(

alright thanks alot man, for ur time...ur a great teacher :)

thanks for the compliment :)