а) 16a - (5 + a)(2a + 6) = 16a - 10a - 30 - 5a - 6 = a - 36
б) 4a^3 + (a + 4a^2)(4 - a) = 4a^3 + 4a - a^2 - 4a^3 = - a^2 + 4a
в) (4 - x)(1 + 3x) + (2 - x)(1 - 5x) = 4 + 12x - x - 3x^2 + 2 - 2x - x + 5x^2 = 6 + 9x + 2x^2
г) (x - 4)(2x - 10) - (2x - 6)(x - 5) = 2x^2 - 10x - 8x + 40 - 2x^2 + 6x - 12x + 30 = -6x + 70
а) 16a - (5 + a)(2a + 6) = 16a - 10a - 30 - 5a - 6 = a - 36
б) 4a^3 + (a + 4a^2)(4 - a) = 4a^3 + 4a - a^2 - 4a^3 = - a^2 + 4a
в) (4 - x)(1 + 3x) + (2 - x)(1 - 5x) = 4 + 12x - x - 3x^2 + 2 - 2x - x + 5x^2 = 6 + 9x + 2x^2
г) (x - 4)(2x - 10) - (2x - 6)(x - 5) = 2x^2 - 10x - 8x + 40 - 2x^2 + 6x - 12x + 30 = -6x + 70