4 4 (a + 1) + (a - 1)
(a + 1)^4 + (a - 1)^4 при a = 4
(a + 1)^4 + (a - 1)^4
((4) + 1)^4 + ((4) - 1)^4
(4 + 1)^4 + (4 - 1)^4
706
(1.0 + a)^4 + (-1.0 + a)^4
/ 4 2\ 2*\1 + a + 6*a /
4 2 2 + 2*a + 12*a