a) xy+3y+xa+3a = y(x+3) + a(x+3) = (y+a)(x+3)
б) 2a+aв+6-3в = a(2+в) + 3(2-в) = a(в+2) - 3(в-2) = (a-3)(в+2)
в) x³+4x²-x-4 = x²(x+4) - 1(x+4) = (x²-1)(x+4) = (x-1)(x+1)(x+4)
г) a³-3aв-2а²в+6в = a(a²-3в) - 2в(a²-3в) = (a-2в)(a²-3в) = (a-2в)(a+√3v)(a-√3v)
a) xy+3y+xa+3a = y(x+3) + a(x+3) = (y+a)(x+3)
б) 2a+aв+6-3в = a(2+в) + 3(2-в) = a(в+2) - 3(в-2) = (a-3)(в+2)
в) x³+4x²-x-4 = x²(x+4) - 1(x+4) = (x²-1)(x+4) = (x-1)(x+1)(x+4)
г) a³-3aв-2а²в+6в = a(a²-3в) - 2в(a²-3в) = (a-2в)(a²-3в) = (a-2в)(a+√3v)(a-√3v)