Write in Standard Form P(x)=1-3x+x^2

$P (x) = 1 - 3 x + x^{2}$

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

$P (x) = a x^{2} + b x + c$

Move $1$ .

$P (x) = - 3 x + x^{2} + 1$

Reorder $- 3 x$ and $x^{2}$ .

$P (x) = x^{2} - 3 x + 1$