Write in Standard Form 9-x^2+2x^5-7x

$9 - x^{2} + 2 x^{5} - 7 x$

To write a polynomial in standard form, simplify and then arrange the terms in descending order.

$a x^{2} + b x + c$

Move $9$ .

$- x^{2} + 2 x^{5} - 7 x + 9$

Reorder $- x^{2}$ and $2 x^{5}$ .

$2 x^{5} - x^{2} - 7 x + 9$