we haven't learn factorisation yet. :X

D:

erm, but i try?

erm wait la..

72m(2) - 98m(2) = ?

the 2 in the blanket is small de 2

isit square?

ya

okay

thank you thank you

npnp

wait arh i try to do on a paper first

okok paiseh la

erm can the question be found in textbook?

ya

pg 48

question 5 f

found it. hahaha.

u know how to do question 5 g?

i like my brain like BLANK lor

72m square divided by 2 = 36m square ; 98n square divided by 2 = 49n square ; square root 36m square = 6 ; square root 49n square = 7

then 2(6m + 7n)(6m - 7n) is the answer

O

M

G

i follow the last method from textbook.

genius leh o.O why didnt u go 2e1?

lols. i refer to the method on the textbook just replace the numbers.. lols.

5g arh.. i try on a piece of paper

ok

thank

erm .. 5g very difficult ..

9a cube - 12a square b + 4ab square = (3a) cube - 2b(3a) square + a(2b) square then idk how to continue

LOL

so hard leh

u still say algebra nice D:

erm, okay okay larr. basic one easy

zzzz

ya its indeed confusing:X