Multiply and simplify. Assume that all variables represent nonnegative numbers.
? 
A. 
B. h
C. 5
D. 5h
Answer: A
Mathematics
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The function f is one-to-one. Find its inverse.f(x) = 5x2 - 7, x ? 0
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = 
D. f-1(x) = - 
Mathematics
Find the nonreal complex solutions of the equation. Write your answer in standard form.(x + 4)2 = -20
A. {-4 ± 2i
}
B. {±2i
}
C. {-4 ± 2i
}
D. {-4 ± 2
}
Mathematics
Simplify.1.42 × [(10 - 4.2) ÷ 0.02 + 3.2]
A. 551.472 B. 683.672 C. 474.672 D. 574.672
Mathematics
Solve the equation.
x = 2
A. {0} B. {5} C. {6} D. {4}
Mathematics