Factorisation by Grouping by LohKY https://padlet.com/loh_kwai_yin/386loekze9qk Discussion of Class Work (Selected Questions) en-us 2015-04-01 21:51:01 UTC 2023-06-26 00:53:28 UTC hello@padlet.com Group 2 Q7 https://padlet.com/loh_kwai_yin/386loekze9qk/wish/55714527 The answer is correct.

But, can you figure out how the terms are organised before arriving at the 1st line of working?

]]> 2015-04-02 00:26:20 UTC https://padlet.com/loh_kwai_yin/386loekze9qk/wish/55714527 Group 2 Q7 https://padlet.com/loh_kwai_yin/386loekze9qk/wish/55714613 Let's examine, what's the thinking behind the 2nd line of the working.

Can you identify the misconception/ error behind the working?

]]> 2015-04-02 00:28:15 UTC https://padlet.com/loh_kwai_yin/386loekze9qk/wish/55714613 Group 2 Q7 https://padlet.com/loh_kwai_yin/386loekze9qk/wish/55714654 The first line was correctly attempted: the common factor for the first two terms, "m" has been identified. In addition, a bracket has been introduced to "n - 1". With this, we are able to identify the common factor "n - 1".

]]> 2015-04-02 00:28:49 UTC https://padlet.com/loh_kwai_yin/386loekze9qk/wish/55714654 Group 3 Q10 https://padlet.com/loh_kwai_yin/386loekze9qk/wish/55714711 It's an attempt to factorise... but... why the change of sign for "y" and "y square" terms

]]> 2015-04-02 00:29:50 UTC https://padlet.com/loh_kwai_yin/386loekze9qk/wish/55714711 Group 4 Q6 https://padlet.com/loh_kwai_yin/386loekze9qk/wish/55714779 While we are able to draw out the common factor of the first two terms and the next two terms, you notice we can proceed with further factorise the expression further.

]]> 2015-04-02 00:31:31 UTC https://padlet.com/loh_kwai_yin/386loekze9qk/wish/55714779 Group 4 Q6 https://padlet.com/loh_kwai_yin/386loekze9qk/wish/55714851 Good attempt - the first two terms give a clue

However, something's not quite right in the following line... what's wrong?

]]> 2015-04-02 00:32:55 UTC https://padlet.com/loh_kwai_yin/386loekze9qk/wish/55714851 Group 1 Q2 https://padlet.com/loh_kwai_yin/386loekze9qk/wish/55714935 Observe: What's the first thing done?

- Grouping of liked terms (to see if we can simplify first)

- Then... Factorise

]]> 2015-04-02 00:35:09 UTC https://padlet.com/loh_kwai_yin/386loekze9qk/wish/55714935 Group 1 Q grace_c https://padlet.com/loh_kwai_yin/386loekze9qk/wish/55715197 Here, we apply group factorisation.

On the other hand, is there an 'easier' way to simplify this?

Clue: Look for like terms

]]> 2015-04-02 00:43:07 UTC https://padlet.com/loh_kwai_yin/386loekze9qk/wish/55715197 Worked Solutiom https://padlet.com/loh_kwai_yin/386loekze9qk/wish/55715846 2015-04-02 01:01:26 UTC https://padlet.com/loh_kwai_yin/386loekze9qk/wish/55715846