Question

упростите выражение a(a+2)(a-2)-(a-4)(a2+4a+16)

Answer 1

a(a+2)(a-2)-(a-4)(a2+4a+16) = a(a² - 4) - (a³- 4³) = a³ - 4a - a³ + 4³ = 4(16-a)