Пошаговое объяснение:

(6f-5e)³ = (6f)³-3×(6f)²×5e+3×6f×(5e)²-(5e)³ = 216f³-540f²e+540fe²-125e³

(7+y)³ = 7³+3×7²×y+3×7×y²+y³ = 343+147y+21y²+y³

(x-2)(x+2)(x²+4) = (x²-4)(x²+4) = x⁴-16

(x³-8)² = (x³)³-3×(x³)²×8+3×x³×8²-8³ = x⁹-24x⁶+192x³-512