Answer: =−14a3−2a2+12
Step-by-step explanation:
−5a3−7a2+3−9a3+5a2+9
=−5a3+−7a2+3+−9a3+5a2+9
Combine Like Terms:
=(−5a3+−9a3)+(−7a2+5a2)+(3+9)
=−14a3+−2a2+12
Answer:
=−14a3−2a2+12
