35ах + 24xy - 20ay - 42x² = 7x(5a + 4y) - 10a(2y + 7x)= 7x(5a + 4y) - 10a(7x + 2y)= 7x(5a + 4y) - 10a(7x + 2y)= (7x - 10a)(5a + 4y)
35ах + 24xy - 20ay - 42x² = 7x(5a + 4y) - 10a(2y + 7x)
= 7x(5a + 4y) - 10a(7x + 2y)
= 7x(5a + 4y) - 10a(7x + 2y)
= (7x - 10a)(5a + 4y)