Question

What is the answer to this question?

u(3u-v)

Answer 1

Apply Distributive property where the following is true:
`A(X+Y)=A(X)+A(Y)`

In accordance with your problem:
`u(3u-v)\rightarrow\text{ Distributive Property}\rightarrow u(3u)+u(-v)=3u^2-uv`