Simplify the Expression

question 29

Multiple Choice

Simplify the expression. 3 y ( xy + y ) - 9 y ²( x - 2 + 5 y ) + 2( y ³ + y ²)

• A)- 6 xy ² + 21 y ² + 20 y ³
• B)- 6 xy ² + 23 y ² - 43 y ³
• C)12 xy ² + 21 y ² - 43 y ³
• D)6 xy ² + 21 y ² - 20 y ³
• E)none of these

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Definitions:

CT Scan

A medical imaging technique that combines a series of X-ray images taken from different angles around the body and uses computer processing to create cross-sectional images, or slices, of the bones, blood vessels, and soft tissues.

Computerized Axial Tomography

An imaging procedure that uses computer-processed combinations of many X-ray measurements taken from different angles to produce cross-sectional images of specific areas of a scanned object.

Palate

The roof of the mouth, separating the oral and nasal cavities, which is involved in taste, speech, and swallowing.

Roof

The upper covering of a building, providing protection from weather conditions such as rain or snow.