Find each product. Write the result in the form a + bi.(4 + i)(4 - i)

A. 22
B. 52
C. 10
D. 16 + 6i


Answer: A

Mathematics

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Use identities to simplify the expression.tan2 x csc2 x

A. tan2 x B. cos3 x C. sin x D. sec2 x

Mathematics

Solve the problem.The temperature at the South Pole was -18 in the morning. Later in the afternoon, it was 17°. By how many degrees did the temperature rise?

A.  1° B.  -35°  C.  35° D.  -1°

Mathematics

Is the set a function? ? ? Answer yes or no.

What will be an ideal response?

Mathematics

Decompose into partial fractions.

A.  + 
B.  - 
C.  - 
D.  + 

Mathematics