(4х+1)(4х-1) = (4х)^2 - 1^2= 16x^2 - 1
(3-2n)(2n+3) = 9 - 4x^2
(5p+4a)(5p-4a) = 25p^2 - 16a^2
(8c^2+4x)(4x-8c^2) = 16x^2 - 64c^4
(6-b^2)(6+b^2) = 36 - b^4
(0.8a^3 - 1)(0.8a^3 + 1) = 0.64a^6 - 1
Объяснение:
