Question

factorise
a²b²-a²-b²+1
Can anyone help me with this sum? ​

Answer 1

Answer:

Step-by-step explanation:

a^2b^2 - a^2 - b^2 + 1

a^2(b^2 -1) - 1 (b^2-1)

(a^2-1)(b^2-1)

(a+1)(a-1)(b+1)(b-1)

Answer 2

Answer:

I don't know sorry for the answer please mark me as a bran list please ???????????????????????sorry for this