can someone give me harder factorising questions..? (1 Viewer)

[girlworld_club]

for a preliminary 2 unit student.

 

[nightweaver066]

 

[girlworld_club]

Opps, i completely miss read this forum! not for mathematics extension 2, just plain 2 unit mathematics.

 

[girlworld_club]

Factorise x^2 + 1

is this hard?

x = plus or negative 1
i didn't even have to give it a look.

if sarcasm was intended, touche.

 

[mnmaa]

Opps, i completely miss read this forum! not for mathematics extension 2, just plain 2 unit mathematics.

factorise (x^2)+1

 

[SpiralFlex]

So hard to type on iPhone.

 

[nightweaver066]

is this hard?

x = plus or negative 1
i didn't even have to give it a look.

if sarcasm was intended, touche.

lol.. I've changed the question.

 

[SpiralFlex]

Edit lol didn't see night weavers post

 

[girlworld_club]

yes i'm lost please give me an answer.

 

[s5097]

So hard to type on iPhone.

 

[mnmaa]

is this hard?

x = plus or negative 1
i didn't even have to give it a look.

if sarcasm was intended, touche.

you need complex numbers, Maths extension 2 so dont worry about it.
how about X^4 - 25

 

[s5097]

factorise (x^2)+1

 

[nightweaver066]

Was intended for OP but okay.. lol.

Another one, factorise:

 

[mnmaa]

factorise (x^2)+1

the questions are for OP mate

 

[s5097]

Was intended for OP but okay.. lol.

Another one, factorise:

Sorry, I'll leave the rest for others.

 

[girlworld_club]

Guys, how did you get the answer to a^4 + 4b^4 (please show full working)

 

[nightweaver066]

Guys, how did you get the answer to a^4 + 4b^4 (please show full working)

Hint: Complete the...

Found another question..
Factorise:

 

[leesh95]

Today I asked my teacher a question out of our maths textbook and he refused to do it because according to him it was way too complicated for HSC. He says that the HSC has simplish questions.
Can somebody tell me if thats true?
I don't know how to start a new thread otherwise I would've.

 

[dulip]

haha, what was the question and which textbook was it from?
some textbook questions can be unreasonable, and it depends what you're talking about
adv maths has simplish questions, but then again; so do most 2u textbooks

 

[stanton_liu]

Guys, how did you get the answer to a^4 + 4b^4 (please show full working)

You can write a^4 + 4b^4 as:
a^4 + 4a^2b^2 + 4b^4 - 4a^2b^2 =

(a^2 + 2b^2)^2 - (2ab)^2 after completing the square and rearranging as a difference of two squares.

now using the difference of two squares, we can factorise it to:

(a^2 + 2b^2 + 2ab) (a^2 + 2b^2 - 2ab)

rearranging the terms would result in the answer (a^2 + 2ab + 2b^2) (a^2 - 2ab + 2b^2)

haha, what was the question and which textbook was it from?
some textbook questions can be unreasonable, and it depends what you're talking about
adv maths has simplish questions, but then again; so do most 2u textbooks

If you're referring to the a^4 + 4b^4 , I believe that those types of questions are in the Extension part of chapter 1 in the Year 11 Cambridge 3 Unit Mathematics textbook.