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calculati x+3xy-3xz si (2xX +4xy)(3xy-9xz)


Răspuns :

x+3xy-3xz=x(1+3y-3z)

(2x+4xy)(3xy-9xz)=2x(1+2y)x3x(y+z)=6x²(1+2y)(y+z)
x+3xy-3xz=x(1+3y-3z) (2x+4xy)(3xy-9xz)=2x(1+2y)x3x(y+z)=6x²(1+2y)(y+z) Sper ca te-am ajutat ))):