Answer:
28. [A] x² -2x +1 r -16
29. [D] -x² -2x -5 -12/(x-2)
Explanation:
In both cases, the answers can be chosen on the basis of the value of the remainder. That value can be found by evaluating the numerator expression at the value of x that makes the denominator zero.
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28. The root of the denominator is x=-2. The value of the numerator there is ...
(5(-2)³ -6 -15(-2) = -40 -6 +30 = -16 . . . . points to answer choice [A]
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29. The root of the denominator is x=2. The value of the numerator there is ...
-(2)³ -2 -2 = -8 -2 -2 = -12 . . . . points to answer choice [D]