Expand and Simplify n( n + 2 ) - 2n ( 1-n )

Question

please solve the problem and give me the answer and the method . 

Answer 1

This is just like the previous post.

Do what Kenneth S. said.

Use the distributive property twice and combine similar (like) terms.

n(n+2)-2n(1-n)

n*n+n*2-2n*1+2n*n

Can you finish ?