Solve the equation.(x2 + 2)1/2 - (2x + 5)1/2 = 0
A. ?
B. {-3, 1}
C. {3, -1}
D. {3}
Answer: C
Mathematics
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Verify that the given equation is an identity.sinh2x = 
What will be an ideal response?
Mathematics
Find the range of the quadratic function.f(x) = (x + 8)2 - 3
A. (-?, -8] B. [-8, ?) C. (-?, -3] D. [-3, ?)
Mathematics
Prepare a probability distribution for the experiment. Let x represent the random variable, and let P represent the probability.Three coins are tossed, and the number of heads is noted.
A. 
B. 
C. 
D. 
Mathematics
Rationalize the denominator.
A. 7
B. 
C. 
D. 7
Mathematics