Ill be honest i have no idea abou this one
Find the product of (x + 3)(x − 3).

x2 − 6x + 9

x2 + 6x + 9

x2 + 9

x2 − 9

Question

Ill be honest i have no idea abou this one
 Find the product of (x + 3)(x − 3).  

x2 − 6x + 9

x2 + 6x + 9

x2 + 9

x2 − 9

kinggeorge · Answer

$$(x+3)(x-3)=x(x-3)+3(x-3)$$Can you finish it from there?

anonymous · Answer

x2 + 6x + 9
 this one?

kinggeorge · Answer

Not quite.$$x(x−3)+3(x−3)=x^2-3x+3x-9=x^2-9$$

anonymous · Answer

16x2 − 9y2 i am pretty sure its this one maybe......

kinggeorge · Answer

You want to factor $16x^2-9y^2$ correct?

anonymous · Answer

x2 − 6x + 9 ok i am really sure this is it :p lol

kinggeorge · Answer

First notice that both terms are perfect squares. Then, by the pattern we can observe from solving $(x+3)(x-3)=x^2-9$. Thus, $$16x^2-9y^2=(4x+3y)(4x-3y)$$

kinggeorge · Answer

And $(x+3)(x-3)=x^2-9$