Respuesta :

coolstick
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)
[tex]9 - y^2[/tex] 

[tex]3^2-y^2[/tex] 

[tex](3+y)(3-y) [/tex]

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