а) 5x^2 - 5 = 5(x^2 - 1) = 5(x+1)(x-1)
б) 2a^2 - 8 = 2(a^2 - 4) = 2(a+2)(a-2)
в) 3an^2 - 27a = 3a(n^2 - 9) = 3a(n+3)(n-3)
г) 2xy^2 - 50x = 2x(y^2 - 25) = 2x(y+5)(y-5)
а) 5x^2 - 5 = 5(x^2 - 1) = 5(x+1)(x-1)
б) 2a^2 - 8 = 2(a^2 - 4) = 2(a+2)(a-2)
в) 3an^2 - 27a = 3a(n^2 - 9) = 3a(n+3)(n-3)
г) 2xy^2 - 50x = 2x(y^2 - 25) = 2x(y+5)(y-5)