Question

(a+b+c)的三次方等于多少

(a+b+c)的三次方等于多少算物体体积的

Answer 1

(a+b+c)�0�6=(a�0�5+2ab+2ac+b�0�5+2bc+c�0�5)(a+b+c)=a�0�6+3a�0�5b+3a�0�5c+3ab�0�5+3b�0�5c+3bc�0�5+ac�0�5+6abc+b�0�6+c�0�6

Answer 2

(a+b+c)^3=a^3+b^3+c^3+3a^2b+3ab^2+3a^2c+3ac^2+3b^2c+3bc^2+6abc