Question

x2-8x-9-y2+10y solve this ​

Answer 1

Answer:

in descending order, your answer would be x^2-y^2+2y-9. Hope this helps!

Step-by-step explanation:

Answer 2

Answer:-6x-9+8y.

Step-by-step explanation: 2x-8x-9-2y+10y                               -6x-9-2y+10y                                                                                     -6x-9+8y