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Use the x-intercept method to find all real solutions of the equation.

x^3- 7x2 + 7x + 15 = 0

a. X = -1, 3, or -5
b. x= 1, -3, or -5
c. X = -1, 3, or 5
d. X = 1, -3, or 5

User John Wells
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1 Answer

3 votes
I believe it is C. X=-1,3,5
User Nino Filiu
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