Question

help

Answer 1

What?

Answer 2

Question number 10

Answer 3

Oh my! Sorry not good at that! : (

Answer 4

no prob :) i just want to know how to do this.

Answer 5

@SolomonZelman

Answer 6

Yeah! Sorry man can't do much!

Answer 7

\[P=a^2+a-1~~~~~~~R=-a-1\]
\[P+R=(a^2+a-1)+(-a-1)=a^2+a-1-a-1=a^2-2\]

Answer 8

Hope this makes sense.

Answer 9

uhm...not too much

Answer 10

can someone explain to me why it is a^2-2