State Whether the Function Is a Polynomial Function or Not $f ( x ) = \sqrt { x } ( \sqrt { x } - 5 )$

question 311

Multiple Choice

State whether the function is a polynomial function or not. If it is, give its degree. If it is not, tell why not.
- $f ( x ) = \sqrt { x } ( \sqrt { x } - 5 )$

• A) Yes; degree 1
• B) No; it is a product
• C) No; x is raised to non-integer power
• D) Yes; degree 2

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