isupovaalina99 isupovaalina99 06-09-2020 Mathematics contestada a) 18c^2 – 2(3c – 1)^2 В) (2a +3)(a −3) – 2a(4 – 6a)С) (2x + 3)(3 —2x) - (2x – 5)^2 –10x
