Asked by Jim
Use the correct form of factoring in order to find the x intercepts.
9r^2-5r-10
9r^2-5r-10
Answers
Answered by
Steve
this one will not factor into rational roots
9r^2-5r-10 = 0
9r^2-5r = 10
(3r-5/6)^2 = 10 + (5/6)^2 = 385/36
3r - 5/6 = ±√385/6
3r = (5±√385)/6
r = (5±√385)/18
9r^2-5r-10 = 0
9r^2-5r = 10
(3r-5/6)^2 = 10 + (5/6)^2 = 385/36
3r - 5/6 = ±√385/6
3r = (5±√385)/6
r = (5±√385)/18
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