Answer:
![9-(0+1+2)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/ij1ozh5j80x142hljlvoxtygd9ervvhmpf.png)
Explanation:
We have given the numbers = 2,0,1,9
We can use addition and subtraction operation to the given numbers such that the answer will be equals to 6.
We can add 2 ,0 and 1 and then subtract from 9 , we will get 6.
So the required expression can be
![9-(0+1+2)\\=9-(3)\\=9-3\\=6](https://img.qammunity.org/2020/formulas/mathematics/middle-school/xsuq8hcf7mm43xi1jm3kyq17aeym1ajnq9.png)
hence, the required expression can be
![9-(0+1+2)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/ij1ozh5j80x142hljlvoxtygd9ervvhmpf.png)