Write the expression in the standard form a + bi.(8 + 6i)2
A. 28 + 96i
B. 100 + 96i
C. 64 + 96i + 36i2
D. 28
Answer: A
Mathematics
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Find the center of mass of a thin plate of constant density covering the given region.The region between the x-axis and the curve y = 6csc2 x, 
? x ? 
A. 
= 
, 
= 6
B. 
= 
, 
= 9
C. 
= 
, 
= 4
D. 
= 
, 
= 8
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Multiply.
A. 
- 16x8
B. 
- 16x16
C. 
+ 16x16
D. 
- 16x4
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Evaluate the expression without a calculator.log11 
A. 
B. - 
C. 2
D. - 2
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Find the reciprocal of the number or algebraic fraction.
A. 
B. 
C. - 
D. 1 - 
Mathematics