Question

reduza os termos semelhantes 3.(xy-1)-5.(xy+1)

Answer 1

3(xy -1) - 5(xy +1) =
= 3xy - 3 - 5xy - 5
= -2xy - 8
= -2(xy + 4)

Answer 2

3(xy-1)-5(xy+1)

Expanda :

3xy-3-5xy-5 =

Recolha termos semelhantes :

( 3 x y - 5 x y ) + ( - 3 - 5 )

-2xy - 8