Simplify the complex number and write it in standard form.
?

?

A. ?
B. ?
C. ?
D. ?
E. ?


Answer: C

Mathematics

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Multiply.(2x + 11)(2x - 11)

A. 2x2 - 44x - 121 B. 4x2 - 44x - 121  C. 4x2 + 44x - 121  D. 4x2 - 121 

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Use the quotient rule to simplify.

A. x2y
B. xy
C. xy2
D. xy2

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Find the exact value of the expression.cos  cos  + sin  sin 

A.
B.
C.
D. 1

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