计算(-3x²y)²·(4xy-3x²y-2x³)
问题描述:
计算(-3x²y)²·(4xy-3x²y-2x³)
答
元素=9x^4y²·(4xy-3x²y-2x³)
=36x^5y³-27x^6y³-18x^7y²