Simplify the radical. Assume that all variables represent positive real numbers.

A. x2
B. x2
C. x
D. x2

Answer: B

Mathematics

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Answer the question.The code for some garage door openers consists of 12 electrical switches that can be set to "+" , "0" , or "-" by the owner. With this type of opener, how many different codes are possible?

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Use the vertex and intercepts to sketch the graph of the quadratic function.f(x) = 2 + 3x + x2 

A.


B.


C.

D.


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