Question

Simplify Algebraic Expression
n^2 + n + 5 - (2n^2+n+1)

just tried to do it by myself, not sure i got the right answer

1. I dropped the brackets
2. Collected Like Terms (n^2 - 2n^2), (n+n), (5+1)
3. n^2 - 2n^2 = -n^2 ?
4. n + n = 2n ?
5. 5 + 1 = 6
Answer = -n^2 + 2n + 6 ??
I'm pretty sure i'm wrong tho.

Answer 1

\[n^2 + n + 5 - (2n^2+n+1) \rightarrow n^2 + n + 5 - 2n^2-n-1\]
\[=n^2 - 2n^2+ n -n+ 5 -1\]
\[=- n^2+ 0+ 4\]
\[=- n^2 + 4\]
is the required answer..

Answer 2

@pufss

Answer 3

The negative beside the bracket meant that i had to subtract all the stuff inside the parenthesis and not add?

Answer 4

@dpasingh