What is the simplified form of this expression?

(-3x2 + 4x) + (2x2 - x - 11)

A.

-x2 + 5x - 11

B.

-x2 + 3x - 11

C.

-x2 + 3x + 11

D.

-x2 + 5x + 11

What can you say about the end behavior of the function f (x) = - 4^6+6x^2-52?

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How do you solve X/14=-21

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