Question

Help pls
my brain hurts​

Answer 1

same man

same

my brain is killing me slowly

Explanation:

Answer 2

7d²

Explanation:

All are like terms. SO combine the like terms

4d² + 9d² - d² - 2d² + 3d² - 6d² = (4 +9 - 1 - 2 + 3 - 6)d²

= ( 4 + 9 + 3 - 1 - 2 -6)d²

= ( 16 - 9)d²

= 7d²