Question

How do you simplify `(7m^2 + 9m + 3) - (3m^2 + 8m + 2)`?

Answer 1

`(7m^2 + 9m + 3) - (3m^2 + 8m + 2)=4m^2+m+1`

Explanation:

`(7m^2 + 9m + 3) - (3m^2 + 8m + 2)=4m^2+m+1`
This surely isn't a perfect square trinomial, so you can try to simplify it with the Delta formula:
`Delta_m=1-4*4=-15<0`
So this trinomial is not simplifiable anymore in the real number system.