Question

I am not ablee to understand the method of doing Identities in maths. Please explain with an example.

Answer 1

In mathematics an identity is an equality relation A = B, such that A and B contain some variables and A and B produce the same value as each other regardless of what values (usually numbers) are substituted for the variables. In other words, A = B is an identity if A and B define the same functions. This means that an identity is an equality between functions that are differently defined. For example, (a + b)2 = a2 + 2ab + b2 and cos2(x) + sin2(x) = 1 are identities. Identities are sometimes indicated by the triple bar symbol ≡ instead of =, the equals sign.

Answer 2

suppose
(200) cube
(x) cube+ ( y ) cube( x+ y)(x)(y)