Odpowiedź :
Odpowiedź:
[tex]a)\ \ (xy-x)(2xy+6x)=2x^2y^2+6x^2y-2x^2y-6x^2=2x^2y^2+4x^2y-6x^2\\\\\\b)\ \ (2a-1)(-2ab-3a-11)=-4a^2b-6a^2-22a+2ab+3a+11=\\\\=-4a^2b-6a^2-19a+2ab+11[/tex]
Odpowiedź:
[tex]a)\ \ (xy-x)(2xy+6x)=2x^2y^2+6x^2y-2x^2y-6x^2=2x^2y^2+4x^2y-6x^2\\\\\\b)\ \ (2a-1)(-2ab-3a-11)=-4a^2b-6a^2-22a+2ab+3a+11=\\\\=-4a^2b-6a^2-19a+2ab+11[/tex]