Question

using suitable identity find the value of 105²-95² mention the identity​

Answer 1

Answer:

(100+5)^2-(100-5)^2

=4×100×5 [(a+b)^2-(a-b)^2=4ab]

=2000

Answer 2

Answer:

Formula : a square - b square =(a+b) (a-b).

So accordingly, Put the value

105 square - 95 square

= (105 +95) (105-95)

= 200 ×10

= 2000