Use the discriminant to find what type of solutions (two rational, two irrational, one rational, or two nonreal complex) each of the following equations has. Do not solve the equation.16x2 + 8x + 1 = 0
A. two nonreal complex solutions
B. two rational solutions
C. two irrational solutions
D. one rational solution
Answer: D
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Determine the indefinite integral. Check your work by differentiation.
d?
A. cot ? + C B. -cot ? + C C. ? + tan ? + C D. cos2 ? + C
Answer the question.Which of the following describes a study in which neither the participants nor the experimenters know which participants are in the control group?
A. Case-control study B. Double-blind experiment C. Single-blind experiment D. Observational study
Find the limit.
A. Does not exist B. -4 C. 4 D. 0
Find the term that should be added to the expression to form a perfect square trinomial. Write the resulting perfect square trinomial in factored form.x2 - 
x
A. 
; 
2
B. 
; 
2
C. 9; 
2
D. - 
x; 
2