at 10:32 how this comes which is written with green color
these two terms are not equal which are written with white color
Doubt in calculation done in video
Hey @anandprakash1091971. while deriving equations using linear algebra , there can be many methods/intuitions and rules leading to a particular expression. So for understanding how the two terms are equal you can refer to this link. It explains the closed form solution very well and in a basic manner. If you still have any doubts , you can revert back.
Hope this helps.
Happy Learning 
okay got it
thankyou
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