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OpenStudy (anonymous):
find the values of variables that make the expression undefined 9y-4/y^2-49
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OpenStudy (anonymous):
y^2-49=0
OpenStudy (anonymous):
|dw:1323408820638:dw|
OpenStudy (anonymous):
When you factor y^2-49 you get (y-7)(y+7), set them to 0 and we get y-7=0------>y=7 y+7=0------>y=-7
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