contestada

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

Respuesta :

harpazo

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.