Which of the following expresses the possible number of positive real solutions for the polynomial equation shown below 5x^3 + x
^2 +7x - 28 = 0
A. Two
B. Three or one
C. One
D. Two or zero
2 answers:
I think the answer is option c.one
there is only one sign change in the whole equation so possiblythe answe must be one. correct me if i am wrong
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