3. Упростите выражение: 1) ((x + 2)(x+11) - 2x(3-4x)) 2) ((a - 2)(a - 1) - a(a + 1))

1) ((x + 2)(x+11) - 2x(3-4x) = x^2 + 11x + 2x + 22 - 6x + 8x^2 = 9x^2 + 7x + 22) 2) ((a - 2)(a - 1) - a(a + 1) = a^2 - a - 2a + 2 - a^2 - a = -4a + 2)