Simplify the expression. Write the result without using negative exponents. (Assume all variables represent nonzero real numbers.)(n9)-3
A. n6
B. 
C. 
D. n27
Answer: C
Mathematics
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Factor completely. If unfactorable, indicate that the polynomial is prime.-x2 + 4x + 45
A. (x - 5)(x + 9) B. prime C. -(x + 5)(x - 9) D. -(x - 5)(x + 9)
Mathematics
Perform the indicated operation and simplify.
- 
A. 
B. 2y
C. 0
D. 
Mathematics
Determine where the graph of the function 
is concave upward and where it is concave downward. Also, find all inflection points of the function.
Select the correct answer. a. CU on (?2, 2), IP none b. CU on (??, ?2) and (2, ?), CD on (?2, 2), IP (?2, ?18) and (2, 18) c. CD on (?2, 2), IP none d. CU on (?2, 2), CD on (??, ?2) and , IP (?2, ?18) and (2, 18)
Mathematics
Find all points where the function is discontinuous.
A. None B. x = -2 C. x = 6 D. x = -2, x = 6
Mathematics