Write in Standard Form 3x^3-x+5x^4

$3 x^{3} - x + 5 x^{4}$

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

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

Move $- x$ .

$3 x^{3} + 5 x^{4} - x$

Reorder $3 x^{3}$ and $5 x^{4}$ .

$5 x^{4} + 3 x^{3} - x$