Algebra... Subtract...3asquare -2a-7 from 8asquare -2asquare -9a-2??

To subtract 3a^2 - 2a - 7 from 8a^2 - 2a^2 - 9a - 2, we first combine like terms:

8a^2 - 2a^2 = 6a^2
-9a - (-2a) = -9a + 2a = -7a

So, the expression becomes:

6a^2 - 7a - 2 - 7

Now, we can subtract 3a^2 - 2a - 7 from this expression:

(6a^2 - 7a - 2 - 7) - (3a^2 - 2a - 7)

6a^2 - 7a - 2 - 7 - 3a^2 + 2a + 7

Combine like terms:

6a^2 - 3a^2 = 3a^2
-7a + 2a = -5a
-2 + 7 = 5

Therefore, the final result is:

3a^2 - 5a + 5