(3a+b)³+(3a-b)³
who will send with step will be the brainliest. Spam will be reported.
Answers
Answered by
1
Answer:
use the formula of (a+b)³
Step-by-step explanation:
firstly, break each sum buy using the formula of (a+b)³
secondly, the middle sign is (+) then plus them if there is cancellation then cut it
finally u got ur answer
Answered by
0
Answer:
-b³
Step-by-step explanation:
(3a+b)³+(3a-b)³
(3a+b) (3a+b) (3a+b)
=(27a³+b³)
(3a-b)³(3a-b)³
(3a-b) (3a-b) (3a-b)
=(27a³-b³)
(27a³+b³)+(27a³-b³)
= -b³
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