Question

write down the identities class 9any 5​

Answer 1

Step-by-step explanation:

x and y.

(x + y)2 = x2 + y2 + 2xy

(x – y)2 = x2 + y2 – 2xy

x2 – y2 = (x + y) (x – y)

(x + a) (x + b) = x2 + (a + b)x + ab ; a and b are two constant values

(x + y)3 = x3 + y3 + 3xy(x + y)

Answer 2

here is the identity i am attaching