thực hiện phép tính sau: 3y^2(2y-1)+y-y(1-y+y^2)-y^2+y 17/09/2021 Bởi Adalyn thực hiện phép tính sau: 3y^2(2y-1)+y-y(1-y+y^2)-y^2+y
`3y^2 ( 2y – 1 ) + y – y ( 1 – y + y^2 ) – y^2 + y` `= 6y^3 – 3y^2 + y – y + y^2 – y^3 – y^2 + y` `= ( 6y^3 – y^3 ) + ( – 3y^2 + y^2 – y^2 ) + ( y – y + y )` `= 5y^3 – 3y^2 + y` `HỌC` `TỐT` `NHA` `!` `#NOCOPY` Bình luận
`3y^2(2y-1)+y-y(1-y+y^2)-y^2+y` `=6y^3-3y^2+y-y+y^2-y^3-y^2+y` `=(6y^3-y^3)+(-3y^2+y^2-y^2)+(y-y+y)` `=5x^3−3y^2+y` Bình luận
`3y^2 ( 2y – 1 ) + y – y ( 1 – y + y^2 ) – y^2 + y`
`= 6y^3 – 3y^2 + y – y + y^2 – y^3 – y^2 + y`
`= ( 6y^3 – y^3 ) + ( – 3y^2 + y^2 – y^2 ) + ( y – y + y )`
`= 5y^3 – 3y^2 + y`
`HỌC` `TỐT` `NHA` `!`
`#NOCOPY`
`3y^2(2y-1)+y-y(1-y+y^2)-y^2+y`
`=6y^3-3y^2+y-y+y^2-y^3-y^2+y`
`=(6y^3-y^3)+(-3y^2+y^2-y^2)+(y-y+y)`
`=5x^3−3y^2+y`