Factorise m(m-1)-n(n-1)
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Heya.... ●●m(m-1)-n(n-1) ●●m²-m-n²+n ●●(m²-n²)-1(m-n) ●●(m-n)(m+n)-1(m-n) ●●taking (m-n) common ●● ●●(m-n)(m+n-1) hope this helps @skb
sby:
thanks
Wlcm friend
u rin which std
12
ok
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