Simplify the Expression  as Much as Possible After Substituting

question 7

Essay

Simplify the expression  as much as possible after substituting for x .

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Definitions:

Latissimus Dorsi

A large, flat muscle on the back that helps in the movement of the shoulders and arms.

Trapezius Group

A collection of muscles extending from the neck to the mid-back, responsible for moving the shoulder blades and supporting the arm.

Rhomboideus Major

A muscle in the back that connects the spine to the scapula, involved in retracting the shoulder blade.

Infraspinatus

A muscle located on the back of the shoulder blade that is responsible for the external rotation of the shoulder joint.