Question

factorise the sum plz do this question

Answer 1

1-(b)^2-2bc+(c)^2
1-b^2-2bc+c^2

Answer 2

1-(b-c)²
1²-(b-c)²

Using identity
a²-b²=(a+b)(a-b)

1²-(b-c)²=>(1+b-c)(1-b+c)