Question

a³ - b³ + a²b² + b³ - a³​

Answer 1

We have,

       △POS∼△ROQ

⇒  ∠3=∠4 and ∠1=∠2

Thus, PS and QR are two lines and the transversal PR cuts them in such a way that ∠3=∠4 i.e., alternate angles are equal.

Hence,       PS∣∣QR.   

Answer 2

Step-by-step explanation:

here is your answer

hope it helps