Question

4. What must be subtracted from 3a? – 6ab – 3b2 – 1 to get 4a? – 7ab – 4b2 –- 1?​

Answer 1

Step-by-step explanation:

Let the requried expression be (??)

Then,

(3a²-6ab-3b²-1)-(??)=4a²-7ab-4b²-1

-(??)=(4a²-7ab-4b²-1)-(3a²-6ab-3b²-1)

-(??)=a²-ab-b²

??=  -a²+ab+b²

By: D.Kamal(hitmanbeastman50)