Question

) (3а-в)(а+2в)-(2а-в)(а-в)

Answer 1

Надеюсь что правильно

Answer 2

Let's simplify the given expression using the distributive property and combining like terms:

(3а-в)(а+2в)-(2а-в)(а-в)

= 3а(a) + 3а(2в) - в(a) - в(2в) - 2а(a) + 2а(в) - в(a) + в(в) // Expanding the brackets

= 3а^2 + 6ав - ав - 2в^2 - 2а^2 + 2ав - ва + в^2 // Simplifying

= 3а^2 - 2а^2 + 6ав + 2ав - ав - ва - 2в^2 + в^2 // Rearranging the terms

= а^2 + 7ав - 2в^2 // Simplifying further

Therefore, the simplified form of the given expression is а^2 + 7ав - 2в^2.