1. ## Simplifying

(2z-1)^2 - 3(2z-1)

Cheers

2. Originally Posted by AJShaw

(2z-1)^2 - 3(2z-1)

Cheers
How do you simplify (a - b)^2 ?

3. (2z-1)^2 - 3(2z-1)

(2z-1)(2z-1) - 3(2z-1)

(2z-1) is common in both terms so you can factor that out

(2z-1) * ((2z-1) - 3)

(2z-1)(2z-4)

4. or just:
$4Z^2-10Z+4$