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b) 6x^2 - 18x + 8x - 24 = 6x^2 - 10x - 24
c) - 8a^2 - 4ab - 4ab - 2b^2 = - 8a^2 - 2b^2 - 8ab
d) -m^2 - mn + mn + n^2 = -m^2 + n^2
e) 6a + 14 + 3a - 1 = 9a + 13
f) 14a + 12 + 5a - 2 = 19a + 10
g) - 24x^2 - 18x + 12x + 9 = -24x^2 - 6x + 9
h) 15x^2 - 5x + 6x - 2 = 15x^2 + x - 2
Mam nadzieję, zę pomogłam :)
Liczę na naj xD