А) 3x³ + x² + 3x + 1 = x²(3x + 1) + 1(3x + 1) = (x² + 1)(3x + 1)
Б) 2x + 2y - x³ - xy = 2(x + y) - x(x² + y) = (2 - x)(x + y)
А) 3x³ + x² + 3x + 1 = x²(3x + 1) + 1(3x + 1) = (x² + 1)(3x + 1)
Б) 2x + 2y - x³ - xy = 2(x + y) - x(x² + y) = (2 - x)(x + y)