Задание 4:
• (a+b)^2 + 4a + 4b = a^2 + 2ab + b^2 + 4a + 4b
• 4x^2 - xy + y^2 - 16 = 4(x^2 - 4) - xy + y^2
• xy^4 - 2y^4 - xy + 2y = y^4(x-2) - y(x-2)
• m - n + m^2 - n^2 = m^2 + m - n^2 - n
Задание 1:
• 27x^3 - y^3 = (3x-y) (9x^2 + 3xy + y^2)
• 25a^3 - ab^2 = a(25a^2 - b^2)
• -3x^2 - 12x - 12 = (-3x - 12) x - 12
DG_Janja