去括号:1/2(2X²Y-3XY²+4XY-X²Y²)=?
来源:学生学帮网 编辑:学帮网 时间:2024/06/08 07:00:11
去括号:1/2(2X²Y-3XY²+4XY-X²Y²)=?
原式=X²Y-1.5XY²+2XY-0.5X²Y²
1/2(2X²Y-3XY²+4XY-X²Y²)
=x²y-3/2xy²+2xy-1/2x²y²
去括号:1/2(2X²Y-3XY²+4XY-X²Y²)=?
原式=X²Y-1.5XY²+2XY-0.5X²Y²
1/2(2X²Y-3XY²+4XY-X²Y²)
=x²y-3/2xy²+2xy-1/2x²y²