Which of the following expressions is this one equivalent to?
(x^4+2x^3-x-2)÷(x^3-1)

a. 2x-5- (3/x^3-1)
b. x^2+x+1
c. x+2
d. x^2+3x+2

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The accompanying table shows the numbers of male and female students in a particular country who received bachelor's degrees in business in a recent year. complete parts (a) and (b) below. business degrees nonbusiness degrees total male 189131 634650 823781 female 169539 885329 1054868 total 358670 1519979 1878649 (a) find the probability that a randomly selected student is male, given that the student received a business degree. the probability that a randomly selected student is male, given that the student received a business degree, is nothing. (round to three decimal places as needed.) (b) find the probability that a randomly selected student received a business degree, given that the student is female. the probability that a randomly selected student received a business degree, given that the student is female, is nothing. (round to three decimal places as needed.)

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?