Respuesta :

1. (9c-2)x(9c+2)
2.3(5x-3y)x(5x+3y)
3.(z+6)*2
4.(2f-9)*2
5.(7a-1)*2
6.(x-2)x(x+2)x(x*2+4)

This took so long to do. Please mark me brain list. Stay safe and have a good day.
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