Question

x² - y² is same as -(y² -x²) how?
explain​

Answer 1

This really depends on the context of the question. I'm going to make the assumption here that you're discussing functions from the real numbers to the real numbers. Strictly speaking, the domain of the function should be given explicitly when you define the function. However, often one defines a function and then says that the domain is the set of all real numbers for which the function is defined. In this interpretation, the domain of your function y=f(x)=2 is all of R and its image is {2}. Similarly, the domain of y=f(x)=2x−6 is all of R and its image is R.

To give you a different example, the domain of the function y=f(x)=1x−1 is R∖{1} and the image is R∖{0}.

Hope this will help u..

Answer 2

Step-by-step explanation:

x²-y²

(x-y)(x+y)

-(y-x)(x+y)

-(y-x)(y+x)

-{y²-x²}