Question

using suitable identities, evaluate (x^2 -y) (x^2 +y)​

Answer 1

Step-by-step explanation:

Identity => (a - b ) ( a + b ) = a^2 - b^2

Here

a = x^2 and b = y

Therefore the expression is simplified into :

x^4 - y^2

Answer 2

Answer:

answer ☺️ attached above