Odpowiedź :
Odpowiedź:
[tex]12ab-a-b+3ab=15ab-a-b\\\\10ab-3a^2b+7ab-7a^2b=17ab-10a^2b\\\\2xy-3x^2y+4xy^2-5xy=-3xy-3x^2y+4xy^2\\\\7x-8x^2-3x-9x^2-1=4x-17x^2-1\\\\9y-10x-5y+15x+7=4y+5x+7\\\\12x^2y-13xy-10x^2y+13xy=2x^2y[/tex]
Odpowiedź:
[tex]12ab-a-b+3ab=15ab-a-b\\\\10ab-3a^2b+7ab-7a^2b=17ab-10a^2b\\\\2xy-3x^2y+4xy^2-5xy=-3xy-3x^2y+4xy^2\\\\7x-8x^2-3x-9x^2-1=4x-17x^2-1\\\\9y-10x-5y+15x+7=4y+5x+7\\\\12x^2y-13xy-10x^2y+13xy=2x^2y[/tex]