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

Answer 1

\[(x+3)(x-3)=x(x-3)+3(x-3)\]Can you finish it from there?

Answer 2

x2 + 6x + 9
this one?

Answer 3

Not quite.\[x(x−3)+3(x−3)=x^2-3x+3x-9=x^2-9\]

Answer 4

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

Answer 5

You want to factor \(16x^2-9y^2\) correct?

Answer 6

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

Answer 7

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, \[16x^2-9y^2=(4x+3y)(4x-3y)\]

Answer 8

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