Answer:
(c + d)(c - d + 1)
Step-by-step explanation:
c² - d² + c + d
(c - d)(c + d) + (c + d)
hey
c²-d²+c+d
[a²-b²=(a+b)(a-b)]
(c+d)(c-d)+c+d
take (c+d) common
(c+d)(c-d+1)
