Yes it is correct i took the test
Answer:
9
Step-by-step explanation:
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:
![P(x)=9x^3-4x^2+10](https://tex.z-dn.net/?f=P%28x%29%3D9x%5E3-4x%5E2%2B10)
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)
![P(-x)=-(9x^3-4x^2+10)](https://tex.z-dn.net/?f=P%28-x%29%3D-%289x%5E3-4x%5E2%2B10%29)
![P(-x)=-9x^3+4x^2-10](https://tex.z-dn.net/?f=P%28-x%29%3D-9x%5E3%2B4x%5E2-10)
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.
Answer:
hi
Step-by-step explanation: