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OpenStudy (anonymous):
(7x-21)/(x^2-7x+12) Please find vertical asymptotes! PLEASE HELP ME!!
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OpenStudy (anonymous):
I got x = 3 and x = 4 But whenI graphed it is only x=4 why?
jimthompson5910 (jim_thompson5910):
hint: factor 7x-21 and factor x^2-7x+12
OpenStudy (anonymous):
hint: factor 7x - 21 = ... factor x² -7x+12 = ... Simplify them: ..
OpenStudy (precal):
|dw:1354918904251:dw|
OpenStudy (precal):
because that (x-3) or x=3 is called a hole
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OpenStudy (precal):
see how it cancels out, that tells you it is a hole
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