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secondary 2 | Maths
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Rosie
Rosie

secondary 2 chevron_right Maths chevron_right Singapore

Pls help asap ty

Date Posted: 1 year ago
Views: 294

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Chia Jun Er, Ashley
Chia Jun Er, Ashley's answer
13 answers (Tutor Details)
1st
When you compare it to a regular factorisation question (e.g. factorise ax^2 + bx + c), look at how the 1st and 3rd term gets the 2nd term through the cross table method. In the same way for this qns, the x^2 and y^2 terms are able to achieve the xy term
Rosie
Rosie
1 year ago
ty but how to do b?
Chia Jun Er, Ashley
Chia Jun Er, Ashley
1 year ago
Use the factorisation table method on the right. :)

a b | c
d e | f
_ _ _
g h i

Your three numbers would be placed in g h and i

From there, fill up a b c d e and f in a way where
a x d = g
b x e = h

a x e = f
d x b = c

c + f = i