Multiply.(x + 9y)(-2x + 4y)
A. -2x2 - 14xy - 14y2
B. x2 - 14xy - 14y2
C. -2x2 - 14xy + 36y2
D. x2 - 14xy + 36y2
Answer: C
Mathematics
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A. 
B. 
C. 
D. 
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Use rational exponents to simplify the radical. If rational exponents appear after simplifying, write the answer in radical notation.
? 
A. 
B. x
C. 
D. 
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Tell whether the expression is a polynomial. If it is, give its degree.-7y4 - 
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