Question

Resolve in to factors: abc-ab-c +1 
please answer quick ​

Answer 1

Answer:

Re-arranging the expression, we get,

abc - c - ab + 1

Taking (c) common in first two terms and taking -1 common in last two terms, we get,

= c (ab -1) -1 (ab -1)

Taking (ab-1) as common,

= (ab-1) (c-1)