Answer:
(a+b)(a+b-c)
Step-by-step explanation:
Formula:
(a+b)² = a² + b² + 2ab
Therefore,
a²+b²+2ab -ac-bc
= (a+b)² -ac-bc
Now take -c common in ac and bc
(a+b)² -c(a+b)
now take (a+b) common in both terms
.
Hope it helps
