Question

ay^7+y^7 - ay^3-y^3 решите пж

Answer 1

ay⁷ + y⁷ - ay³ - y³ =

= y⁷(a + 1) - y³(a + 1) = (a + 1)(y⁷ - y³) =

= y³(y⁴ - 1)(a + 1) = y³(y² - 1)(y² + 1)(a + 1) =

= y³(y - 1)(y + 1)(y² + 1)(a + 1)