Write in Standard Form (3y^2-4y+1)+(-y^2+y-2)

$(3 y^{2} - 4 y + 1) + (- y^{2} + y - 2)$

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

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

Subtract $y^{2}$ from $3 y^{2}$ .

$2 y^{2} - 4 y + 1 + y - 2$

Add $- 4 y$ and $y$ .

$2 y^{2} - 3 y + 1 - 2$

Subtract $2$ from $1$ .

$2 y^{2} - 3 y - 1$