Descartes 4x^7+3x^6+x^5+2x^4-x^3+9x^2+x+1
Using Descartes' Rule of Signs, determine the number of real solutions to 4x 7 + 3x 6 + x 5 + 2x 4 - x 3 + 9x 2 + x + 1 We first evaluate the possible positive roots using ƒ(x) = 4x 7 + 3x 6 + x 5 + 2x 4 - x 3 + 9x 2 + x + 1 There are 2 sign change(s ......