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25 March, 16:42

Factorise each of the following.

a) 6rt - 3st + 6ru - 3su

b) 7mn - 21n + 35m - 105

c) 64 - 8j + 16k - 2jk

d) 3a^2 - a^2b + 3ac - abc

e) 5x^2 + 10x + x^2y + 2xy

f) 2m^2 - m^2n + 2mn - mn^2

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  1. 25 March, 17:10
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    I will do (a) only.

    6rt - 3st + 6ru - 3su

    6rt - 3st = 3t (2r - s)

    6ru - 3su = 3u (2r - s)

    Answer: (3t + 3u) (2r - s)

    Do the rest likewise.
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