(x-2)^3+64 (a-b)^3+8 (5x+4)^3-(5x-4)^3 27-(a+1)^3 упростить

Question

(x-2)^3+64
(a-b)^3+8
(5x+4)^3-(5x-4)^3
27-(a+1)^3 упростить

Answer 1

1)(x-2)^3+64=
x^3-6x^2+8x-8 +64
2)(a-b)^3+8=
A^3-3a^2b+3ab^2+8
3)(5x+4)^3-(5x-4)^3=125x^3+60x^2+240x+64
-125x^3--60x^2+240x-64=480x
4)27-(a+1)^3=27-(a^3+3a^2+3a+1)=
27-a^3+3a^2+3a+1=28-a^3+3a^2+3a