2(x^3)^2乘x^3减(3x^3)^3+(5x^2)乘x^7

问题描述:

2(x^3)^2乘x^3减(3x^3)^3+(5x^2)乘x^7

2(x^3)^2乘x^3减(3x^3)^3+(5x^2)乘x^7
=2x^9 -27x^9 +5x^9
=-20x^9