(a+b) ^2-(a-b) ^2=_
Answers
Answered by
2
Answer:
=4ab
Step-by-step explanation:
(a+b)²-(a-b)²
using identities
=(a²+b²+2ab)-(a²+b²-2ab)
=a²+b²+2ab-a²-b²+2ab
=2ab+2ab
=4ab
Similar questions