August 2022 0 30 Report
Доведіть тотожність (винесіть спільний множник за дужки):

1) (2х – 7у)(3х2 + 5ху – 2у2) – (2х – 7у)(3х2 + 2ху – 2у2) = 3ху(2х – 7у);

2) (3m – 4)(7n2 – 3n – 5) + (4 – 3m)(7n2 – 3n – 3) = 8 – 6m
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