Answer:
[tex] {80x}^{7} - {20x}^{4} + {6x}^{2} - 18[/tex]
Explanation:
The Power Rule, one of the most commonly used derivative rules says:
The derivative of x^n is nx(n−1)
10x^8 - 4x^5 + 2x^3 -18x - 9
=[ (10×8)^8-1 ] + [ (-4×5)^5-1 ] + [ (2×3)^3-1] + [ (-18×1)^1-1] + [(-9×0)^0-0]
=80x^7 - 20x^4 + 6x^2 - 18
