uproszczanie wyrazenia algebraicznego (klasa II Gimnazjum):
a) (7x - 8)(5x - 3)=
a) (7x - 8)(5x - 3)= 35x² - 21x - 35x +24 = 35x² - 56x + 24
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a) (7x - 8)(5x - 3)= 35x² - 21x - 35x +24 = 35x² - 56x + 24