Question

Упростите вырожение (3а-в)²-(а²+2в)

Answer 1

= 9а²-6ав+в²-а²-2в=8а²+в²-6ав-2в

Answer 2

9a^2 - 6ab + b^2 - a^2 - 2b = 8a^2 - 6ab - 2b + b^2