Expand is quetion please
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( x+y+4)^2
here let
x+y=t
so
( t+4)^2 = t^2 + 16 + 8t
put value of t
now
(x+y)^2 + 16 + 8(x+y)
= x^2+y^2 + 2xy + 16 + 8x+8y
= x^2 + y^2 +2xy +8x+8y+16
##hope it can help you##
here let
x+y=t
so
( t+4)^2 = t^2 + 16 + 8t
put value of t
now
(x+y)^2 + 16 + 8(x+y)
= x^2+y^2 + 2xy + 16 + 8x+8y
= x^2 + y^2 +2xy +8x+8y+16
##hope it can help you##
ManshulJain:
pls mark me as brainliest
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