Question

factorise..
a^4b^4-c^4 and abc-ab-c+1​

Answer 1

Answer:

hola mate.

see the attachment

hope it helps you

Answer 2

a^4b^4 - c^4

(a^2b^2 + c^2)(ab - c )(ab+c)

and

abc - ab - c +1

ab(c - 1) + 1

{(sqrt ab(c -1))^2 - i^2)

{sqrt (ab -1) - 1}{sqrt (ab -1) +1}