Question

Find the product mentally.

(z - 12)(z + 12)

A.z^2 - 144

B.z^2 - 24t - 144

C.z^2 + 144
___________
I keep geting stuck on these kind of questions... Please help

Answer 1

I mentally got A

Answer 2

lol

Answer 3

The trick with these is the remember the pattern. 1one minus one plus means the middle term is going to cancel, so you are left with \[Z^2-144\]

Answer 4

ok thanks :)