Write in Standard Form (5x^2+8x-10)+(-12-x+3x^2)

$(5 x^{2} + 8 x - 10) + (- 12 - x + 3 x^{2})$

Step 1

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

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

Step 2

Add $5 x^{2}$ and $3 x^{2}$ .

$8 x^{2} + 8 x - 10 - 12 - x$

Step 3

Subtract $x$ from $8 x$ .

$8 x^{2} + 7 x - 10 - 12$

Step 4

Subtract $12$ from $- 10$ .

$8 x^{2} + 7 x - 22$