Answer:
2.6
Step-by-step explanation:
i hope this helps bro because i know this is the right answer because i think so and im pretty sure im right because I think so
(a+b)^7= a^7+ 7a^7b+ 21 a^6b²+ 35a^5b³+ 35 a⁴b⁴+ 21 a³b^5 + 7a²b^6 + b^7
