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

question 78

Multiple Choice

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

• A) \(x ^ { 2 } + y ^ { 2 } + x z - y z + 2 x y\)
• B) \(x ^ { 2 } - y ^ { 2 } + x z - y z - 2 x y\)
• C) \(x ^ { 2 } - y ^ { 2 } + x z - y z\)
• D) \(x ^ { 2 } - y ^ { 2 } + x z - y z + 2 x y\)

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