Question

Expand and simplify: 5y (2y – z) – 3z(y + 3z)

Answer 1

Answer:

Step-by-step explanation:

5y (2y – z) – 3z(y + 3z)

= 10y^2 -5yz-3zy-3z^2

= 10y^2 -2yz -3z^2

Answer 2

5y (2y – z) – 3z(y + 3z)

= 10y^2 -5yz-3zy-9z^2

= 10y^2 -8yz -9z^2

Hope it may help.