Question

What is this, (2r-1)(r-1)? I'm so confused.

Answer 1

(2r-1)(r-1)
=2r(r-1) -1(r-1)
= 2r^2-2r-r+1
=2r^2-3r+1

Answer 2

It looks like the factored form of a polynomial

Explanation:

In unfactored form, it would be this:

2r^2 + -2r + 1