Question

Develop and reduce n²-(n-1)²-(n-2)²+(n+3)²

Answer 1

expand each of the binomials and simplify

Answer 2

expand?

Answer 3

"Expand and simplify" would make more sense here.
What's the expansion of (n-1)^2? of (n-2)^2? and so on.
Write your expansions in a list and combine "like" ("similar") terms.

(x-3)^2 "expanded" into a trinomial is x^2 - 6x + 9, (Example)

Answer 4

welshfella is saying the same thing in different words. "expand" is a very common and imiportant word in algebra.

Answer 5

Thank you