Answer:
0.8
Step-by-step explanation:
We begin with the expression: 
First, we need to convert the fractions into decimals to make this easier.
and 
Once we have this, we can simplify it

#include
int main()
{
int num;
scanf("%d", &num);
printf("%d", num*num);
return 0;
}
The calculation: 4kg-2.3kg = 1.7 kg
The crate weighs 1.7 kg
Answer:
5x²
Step-by-step explanation:
because polynomials are the expressions where many terms are involved