# Descartes's Rule of Signs to determine the possible numbers of positive

**Question description**

Use Descartes's Rule of Signs to determine the possible numbers of positive and negative zeros of the function.

*f*(*x*) = 6*x*^{3} + 3*x*^{2} – *x* + 6

*f*(

*x*) is . Therefore, the number of real zeros of

*f*is .

The number of variations in sign in

*f*(-

*x*) is . Therefore, the number of real zeros of

*f*is .

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