Спростити вираз -3х(2х-у)-у(3х+5у)

Question

Спростити вираз -3х(2х-у)-у(3х+5у)

Answer 1

-3х(2х-у)-у(3х+5у)=-6х²+3ху-3ху-5у²=-(6х²+5у²)

Answer 2

-3х(2х-у)-у(3х+5у)=-6х²+3ху-3ху-5у²=-6х²-5у²