4x^18-2x^12*x^6
问题描述:
4x^18-2x^12*x^6
答
4x^18-2x^12*x^6
=4x^18-2x^18
=2x^18
4x^18-2x^12*x^6
4x^18-2x^12*x^6
=4x^18-2x^18
=2x^18