Solve the Problem $$[ ( 7 x - 2 ) + 2 y ] ^ { 2 }$$

question 308

Multiple Choice

Solve the problem.
- $$[ ( 7 x - 2 ) + 2 y ] ^ { 2 }$$

• A) \(49 x ^ { 2 } - 28 x + 28 x y - 8 y + 4 y ^ { 2 }\)
• B) \(49 x ^ { 2 } - 14 x + 4 + 14 x y + 4 y + 4 y ^ { 2 }\)
• C) \(49 x ^ { 2 } - 28 x + 4 + 14 x y + 4 y + 4 y ^ { 2 }\)
• D) \(49 x ^ { 2 } - 28 x + 4 + 28 x y - 8 y + 4 y ^ { 2 }\)

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Definitions:

Mounting Distance

The specific space required between two objects or components to properly install or fit them.

Overall Length

The total length of an object measured from one end to the other.

Crown Height

The vertical distance between the top of a curved surface (like a road or a cam) and the chord (straight line) connecting the endpoints of the curve.

Whole Depth

In gear terminology, the total depth of a gear tooth space, from the top of the tooth to the bottom of the gullet.