Question

(a+b)²-1
factorise with solution
step by step ​

Answer 1

Answer:

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

Step-by-step explanation:

(a+b)²-1 = (a+b)²-1²

           Use the identity x² - y² = (x +y)(x -y) and here x =(a +b) & y= 1

  = (a+b + 1)(a +b -1)

Answer 2

Answer:

here is the step by step answer

here I had did 1 ^2 because it is equal to 1 only