Use Descartes's Rule of Signs to Determine the Possible Numbers

Multiple Choice

Use Descartes's Rule of Signs to determine the possible numbers of positive and negative zeros of the function. ​
4x⁵ - 8x
​

A) One negative zero
B) One negative zero or three positive zeros
C) Two negative zeros or no positive zero
D) One positive zero,one negative zero
E) One negative zero,four negative zeros