Объяснение:
(n - 6)(9n + 2)
(5n - 2)^2 - (4n + 4)^2 = 25n^2 - 20n + 4 - (16n^2 + 32n + 16) = 25n^2 - 20n + 4 - 16n^2 - 32n - 16 = 9n^2 - 52n - 12 = 9n^2 + 2n - 54n - 12 = n(9n + 2) - 6(9n + 2) = (n - 6)(9n + 2)
Объяснение:
(n - 6)(9n + 2)
Объяснение:
(5n - 2)^2 - (4n + 4)^2 = 25n^2 - 20n + 4 - (16n^2 + 32n + 16) = 25n^2 - 20n + 4 - 16n^2 - 32n - 16 = 9n^2 - 52n - 12 = 9n^2 + 2n - 54n - 12 = n(9n + 2) - 6(9n + 2) = (n - 6)(9n + 2)