Question

Express 9 - y2 as the product of two binomial factors

Answer 1

`9 - y^2`


`3^2-y^2`


`(3+y)(3-y)`

Answer 2

Binomial factors are where two factors are being added. For a²-b², it can be written as (a-b)*(a+b). Writing it out, we know that 9=3², so we can make it
(3-y)(3+y)