(x+y -z)^2 write it in the expanded form
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QUESTION -
(x+y -z)^2 write it in the expanded form
ANSWER -
[ATTACHMENT WILL HELP YOU DEFINITELY]
Note :-
By mistake, I put
x= a
x= ay= b
x= ay= b z = -c
But answer is correct you have to just put x, y, z instead of a, b, - c, respectively.
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Answer:
(x+y-z)^2
=(x+y-z)(x+y-z)
=x^2+xy-xz+xy+y^2-yz-zx-zy+z^2
=x^2+y^2+z^2+2xy-2yz-2zx
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