Multiply, and Then Simplify If Possible $( \sqrt { 7 } + 5 ) ( \sqrt { 7 } - 5 )$

question 322

Multiple Choice

Multiply, and then simplify if possible. Assume all variables represent positive real numbers.
- $( \sqrt { 7 } + 5 ) ( \sqrt { 7 } - 5 )$

• A) \(7 - 2 \sqrt { 5 }\)
• B) 2
• C) 32
• D) \(- 18\)

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