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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Definitions:

Serous Membrane

A thin layer of tissue that lines certain internal cavities of the body, secreting a fluid that lubricates organ surfaces.

Inflammation

A biological response to injury or infection, leading to redness, heat, swelling, and pain in the affected area.

Lung

One of the two respiratory organs located in the chest, which facilitate the exchange of oxygen and carbon dioxide between the air and blood.

Organisms

Living entities that can carry out life processes independently, ranging from bacteria to plants and animals.