Qualification > Math

Challenge for people who loves maths..

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AS-Girl:
Hi

I have these questions which i didnt understand, so i was wondering if someone can solve these 4 questions and scan the working out..

The most important thing to me is the working out and explanation...I wrote the answer at the end of each question..Thought it would be helpful

Thanks :)

AS-Girl:
c'mmon :)

elemis:
I've done the first one.

Explanation coming up

elemis:
is the same as :

If  then a-1 =

Hence, can be simplified as follows :



Thus, 3x = a-1

Inputting a-1 into the red colour equation gives :

3 * (a-1)2

Giving 3 * a-2


Which is basically :

AS-Girl:
Got it! thanks Ari Ben Canaan   :D :D

need the 3 other questions !!

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