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OpenStudy (anonymous):
7 ----- 2z+9 Find all number for which the rational expression is undefined I got is this is this right 7 ---- 2z+9
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OpenStudy (anonymous):
z = -9/2
OpenStudy (anonymous):
it is undefined when the demominator becomes zero..so equate 2z + 9 to zero and solve for z
OpenStudy (anonymous):
well it was suppose to look like 7 ------ 2z+9 Is it still undefined
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