Perform the Indicated Operation $( \sqrt { 7 } + 5 ) ( \sqrt { 7 } - 5 )$

question 262

Multiple Choice

Perform the indicated operation. Assume that all variables represent positive real numbers.
- $( \sqrt { 7 } + 5 ) ( \sqrt { 7 } - 5 )$

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

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Definitions:

Brach/i

A combining form meaning arm, or relating to the arm or branches.

Ventral

Pertaining to the front or anterior part of the body in both humans and animal; opposite of dorsal.

Belly Side

The front part of the human body or the surface of an animal's body that contains the stomach.

Cilia

Hair-like structures on the surface of cells that move in wave-like motions, aiding in transport and movement.