Please help please please ASAP please please
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Answer:
Descarte's rule says that the polynomial will have the number of zeroes equal to the number of times the sign off the coefficient changes.
For positive real roots:
The coefficient of polynomial is:
+9 -4 +10
There is 2 time sign in changing in 1st and 2nd term and then in 2nd and 3rd term.
So,there will be 2 positive real roots or less but even.
For negative real roots find P(-x)
So, coefficient of above polynomial is:
-9 +4 -10
There is 2 time sign in changing in 1st and 2nd term and then in 2nd and 3rd term.
So,there will be 2 negative real roots or less but even.
When you put your 2 rounded ends together you get a perfect circle so let's find the circumference around that circle first. 
which of course gives us a circumference of 
. Now add in 300 + 300 to get 600+140pi, and when you multiply 400 times pi and add in the 600 you get 1039.8, which is your 1040 above.