HAHAHAHAH your bad
Step-by-step explanation:
Answer:
b. 4
Step-by-step explanation:
Answer:
-19
Step-by-step explanation:
It is 9*9 21 times so
9*9*9*9*9*9*9*9*9*9*9*9*9*9*9*9*9*9*9*9*9=
1.09418989e20 is the answer.
The coefficient of the second term is 18.
What you do is you FOIL the terms: