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va rog urgent -2x[3xy-5y]

Răspuns :

 -2x[3xy-5y] = 

= - 6x
²y + 10xy

= 10xy - 6x²y

= 2(5xy - 3x
²y)
-2x(3xy-5y)=
=-2x•3xy-2x•(-5y)=
=-6x²y+10xy

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