а) x^8 × xy^2 = x^8 x y^2 = x^9y^2
б) 6ab^7 × a = 6a a b^7 = 6a^2b^7
в) 7xy^9 × 3x^6yz = 7 3 x^7 y^9 z = 21x^7y^9z
г) bcd × (-3b^8c^3d) = -3bcd * b^8c^3d = -3b^9c^4d^2
а) x^8 × xy^2 = x^8 x y^2 = x^9y^2
б) 6ab^7 × a = 6a a b^7 = 6a^2b^7
в) 7xy^9 × 3x^6yz = 7 3 x^7 y^9 z = 21x^7y^9z
г) bcd × (-3b^8c^3d) = -3bcd * b^8c^3d = -3b^9c^4d^2