初二数学5y平方-(y-2)(3y+1)-2(y+1)(y-5)
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/29 01:10:48
![初二数学5y平方-(y-2)(3y+1)-2(y+1)(y-5)](/uploads/image/z/4340970-18-0.jpg?t=%E5%88%9D%E4%BA%8C%E6%95%B0%E5%AD%A65y%E5%B9%B3%E6%96%B9-%EF%BC%88y-2%EF%BC%89%EF%BC%883y%2B1%EF%BC%89-2%EF%BC%88y%2B1%EF%BC%89%EF%BC%88y-5%EF%BC%89)
初二数学5y平方-(y-2)(3y+1)-2(y+1)(y-5)
初二数学5y平方-(y-2)(3y+1)-2(y+1)(y-5)
初二数学5y平方-(y-2)(3y+1)-2(y+1)(y-5)
5y²-(y-2)(3y+1)-2(y+1)(y-5)
=5y²-3y²+6y-y+2-2y²+10y-2y+10
=6y-y+2+10y-2y+10
=13y+12
5y2-3y2+5y+2-2y2+8y+10
10y+12
=13y+12