{12a^3-6a^2·(-xa)^5+3a}÷(3a)-1
问题描述:
{12a^3-6a^2·(-xa)^5+3a}÷(3a)-1
答
原式=(12a³+6x^5a^7+3a)÷3a-1
=12a³÷3a+6x^5a^7÷3a+3a÷3a-1
=4a²+2x^5a^6+1-1
=4a²+2x^5a^6