Question

50 Points....

Pls answer the question with a proper explanation for all to understand.
If spammed then it will be quickly deleted.​

Answer 1

Step-by-step explanation:

The answer is explained in the attachment.

$\Rightarrow \boxed{\frac{a^2(\alpha - \beta)^2}{2}}$

Answer 2

Your answer is in the attachment.

I hope it helps. ^_°