The second sentence would be the correct replacement for the sentence
It could have led to this condition because the text states that he falls on his face everyday. He has fractured his nose and sphenoid bone. I don’t know if that meant what I just wrote but that’s my answer.
Our morose mood or emotionally turbulent.
1 st expression = (a+b)^2
(a+b) (a+b)
2nd expression = a^2-b^2
= (a+b) (a-b)
therefore hcf = ( a+b)
