O-Level Additional Math

[iFruit]

hot_chocolate:

Hi iFruit,


The answers are correct! Thanks for the solutions.

Agree with atutor2001, you're really good.

Thank you atutor2001 and hot_chocolate. You are very kind.

[emerald]

Hi, pls help to solve:


(2h - 7k)(3k - 1)(3 - h)


Thanks.

[iFruit]

emerald:

Hi, pls help to solve:


(2h - 7k)(3k - 1)(3 - h)


Thanks.

Hi emerald,

Is the question complete? Could you clarify?

[emerald]

iFruit:

emerald:

Hi, pls help to solve:


(2h - 7k)(3k - 1)(3 - h)


Thanks.

Hi emerald,

Is the question complete? Could you clarify?

Hi iFruit,

This is the given question but maybe there's some problem with it cos my dd couldn't solve it. Anyway, thanks for responding.

[OK Lor]

Hi,


The question is a little off topic, please help to factorise x⁴+ 4

Thanks.

[iFruit]

OK Lor:

Hi,


The question is a little off topic, please help to factorise x⁴+ 4

Thanks.

x⁴+ 4 = x⁴+ 4+4x²-4x² = (x²+2)² - (2x)² = (x²+2x+2)(x²-2x+2)

[OK Lor]

Hi iFruit,


Thank you very much

[atutor2001]

iFruit:

OK Lor:

Hi,


The question is a little off topic, please help to factorise x⁴+ 4

Thanks.

x⁴+ 4 = x⁴+ 4+4x²-4x² = (x²+2)² - (2x)² = (x²+2x+2)(x²-2x+2)

Hi iFruit

I really enjoy your solution, it appears so simple once the approach is correct.

Just curious, is the above approach covered in normal O level course work for A math (it appears as a modification to \"completing the square\" to me) or is it something that we gain through more exposure to mathematical problems.

Regards

[iFruit]

atutor2001:

iFruit:

[quote=\"OK Lor\"]Hi,


The question is a little off topic, please help to factorise x⁴+ 4

Thanks.

x⁴+ 4 = x⁴+ 4+4x²-4x² = (x²+2)² - (2x)² = (x²+2x+2)(x²-2x+2)

Hi iFruit

I really enjoy your solution, it appears so simple once the approach is correct.

Just curious, is the above approach covered in normal O level course work for A math (it appears as a modification to \"completing the square\" to me) or is it something that we gain through more exposure to mathematical problems.

Regards[/quote]Hi atutor2001,

You are right. IMHO, as kids gain experience they can routinely solve these kind of problems. Just a matter of exposure..

Regards.

[small]

Hi all,


Please help to solve this Sec 1 question and many thanks in advance.

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.