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Remove or Add Parentheses as Indicated (x+y+z)(x−y)( x + y + z ) ( x - y )

Question 78

Multiple Choice

Remove or add parentheses as indicated.
-Rewrite (x+y+z) (x−y) ( x + y + z ) ( x - y ) without parentheses.


A) x2+y2+xz−yz+2xyx ^ { 2 } + y ^ { 2 } + x z - y z + 2 x y
B) x2−y2+xz−yz−2xyx ^ { 2 } - y ^ { 2 } + x z - y z - 2 x y
C) x2−y2+xz−yzx ^ { 2 } - y ^ { 2 } + x z - y z
D) x2−y2+xz−yz+2xyx ^ { 2 } - y ^ { 2 } + x z - y z + 2 x y

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