Find the values of x for which the expression is a real number.
A. 
B. 
? 
C. 
D. 
? 
Answer: D
Mathematics
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Multiply. Write your answer in the form a + bi.(5 + 8i)(8 + 8i)
A. -24 - 104i B. 64i2 + 104i + 40 C. 104 + 24i D. -24 + 104i
Mathematics
Evaluate the expression.
-3
A. - 27
B. 
C. - 
D. 27
Mathematics
Determine whether the pair of fractions is equivalent.
and 
A. equivalent B. not equivalent
Mathematics
Express the sum using summation notation.
+ 
+ 
+ ... + 
A. 
B. 
C. 
D. 
Mathematics