作业帮A与2x²y-5xy²+6y³的和为3x²-4x²y+5y²,求A
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/09 06:05:05
A与2x²y-5xy²+6y³的和为3x²-4x²y+5y²,求A
A与2x²y-5xy²+6y³的和为3x²-4x²y+5y²,求A
A与2x²y-5xy²+6y³的和为3x²-4x²y+5y²,求A
A=(3X²-4X²Y+5Y²)-(2X²Y-5XY²+6Y³)
=3X²-4X²Y+5Y²-2X²Y+5XY²-6Y³
=3X²-6X²Y+5Y²+5XY²-6Y³