Multiply, then simplify the product. Assume that all variables represent positive real numbers.(5 - 2
)2
A. 25 - 4
B. 37 - 20
C. 37 + 20
D. 25 + 4
Answer: B
Mathematics
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Unit = one circle
A. 
B. 
C. 
D. 
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Solve.A formula for the focal length of a lens is f = 
. Calculate f (the focal length) for a = 16 cm and 
Round to the nearest tenth.
A. 6.9 cm B. 9.1 cm C. 6.0 cm D. 8.0 cm
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Find the product of the complex number and its conjugate.-3 + 5i
A. 37 B. 35 C. -16 D. 34
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