Question

factor: z^2 - 9

Answer 1

Use a place holder and add 0z to the equation
so then it'll be z^2 + 0z - 9.

Answer 2

Now all you need to do is find what 2 numbers have a product of 9 and a sum of 0.

Answer 3

wait so I dnt stop at z^2 + 0z-9

Answer 4

No you continue until you have factored out the equation

Answer 5

nothing has a sum of 0

Answer 6

3x3 is 9

Answer 7

Well if you have a negative 3 and a postive 3..

Answer 8

?

Answer 9

oh yea its a negative

Answer 10

So it'll be (z-3)(z+3) as your final answer.

Answer 11

ofcourse. I shuld of realized that. so do I give you a medal?

Answer 12

Lol that would be nice of you, yes. :)

Answer 13

im new to this. how do you give medals?