omg.. i dont know how to factorise lol (1 Viewer)

[sando]

question 1 b)

2x^2 + 5x -3

lol.. wats answer ?

 

[fishy89sg]

wasnt it

(2x-1)(x+3)

 

[Seoul51]

OH MY... I can't believe... omg... I am an idiot.... that's the answer I first got and I don't know WHY THE HELL I thought it looked weird, so I crossed it out and changed it... ARGHH, what the hell was I thinking?

 

[sandz_2]

i completely went black on that Q and we learnt in one of our 1st yr 11 lessons

 

[DeathB4Life]

hmm, i thought i posted in here already. well to repeat myself (if such a post could be called a "repeat" as the existence of the original post (if it indeed can be called the "original" post) remains questionable)

anyways, i first looked at that question and had no clue what to do. i always forget how to factorise when the "a" in a quadratic isnt 1. then i just thought id take out the 2 and then use quadratics but realised that would probably take another 30-40 seconds, which would greatly destroy the momentum i had been picking up since the start of the exam several seconds earlier. i skipped it hoping to come back to it using the cheap, easy, reliable quadratic formula instead of having to remember how to factorise but instead i wasted the final 10 minutes staring blankly at question 10 and forgot to return to that poor empty spot of white on my paper.

 

[jemsta]

yeah this happens to ya when you're under exam conditions
its a lot different to doing past papers at home ay
dont worry i think lots of other people did the same thing...a mental blank
no use dwelling over it though...focus on your upcoming subjects

 

[maskd]

Yep I mental blanked on that question.

 

[lala2]

I know that "phenonomen"--you're already panicked, plus it was such an easy question you went looking for a harder answer--my teacher explained that to us. Hence why someone in our class was like, '1+1=3' or something like that, and someone else was like:

'10/1 doesn't equal 10'...
"um, but it is"
"why?"
"it's upon 1?!"
*blank stare, silence*
then..." oh!"

 

[sando]

i'm glad i wasnt the only idiot doing 2unit maths

 

[shinji]

hmm, i thought i posted in here already. well to repeat myself (if such a post could be called a "repeat" as the existence of the original post (if it indeed can be called the "original" post) remains questionable)

lawl!
i got it right.
one of the trends in hsc papers. most likely be a factorise question.

 

[fishy89sg]

and that useless Q1 a) testing nothing (useful)

 

[kerfuffle]

Doesn't 1.a) test whether you know how to use your calculator or not? And whether you know how to use the calculator's rounding off thing to get the right rounding off? xD

 

[sando]

1 a) just tests that the battery in your calculator is working.. so that they dont have misadventure forms flying in left right and centre

 

[thehootman]

Question one was much more difficult than previous years question one.

 

[TNguyen]

if you don't know how to factorise by now, then maybe you shouldn't be doing Maths at all.

 

[jessdoit]

Oh man hahah that must suck hard...
I mean it's too late now but why didn't you try expanding it...?
Easy way to check if you're right or wrong.
Anyways at least it's all over for you now