Answer:
So in the blanks there will be 1 , 2, 7, 3
An the expression is
Explanation:
We have given the expression
![8943=......* 20^3+.......* 20^2+......* 20+......* 1](https://img.qammunity.org/2020/formulas/mathematics/high-school/cm2brl8wa04tx8v4efcy1b5leayoub9p1h.png)
We know that
![20^3=8000](https://img.qammunity.org/2020/formulas/mathematics/high-school/tuv7s6yhgnrvyeli4d2eixf08scask7rb2.png)
When we multiply 8000 by 1 it will be 8000
We know that
when we multiply 400 by 2
Then it will give 400×2 = 800
And 20×7 = 140
And 3×1 = 3
When we add all these numbers 8000+800+140+3 = 8943
So in the blanks there will be 1 , 2, 7, 3
An the expression is
![8943=1* 20^3+2* 20^2+7* 20+3* 1](https://img.qammunity.org/2020/formulas/mathematics/high-school/74i6s5u209estqg40q9itp06cu9ua35pqv.png)