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Mathematics 21 Online
OpenStudy (anonymous):

Using graphing technology, approximate where the graph of y = 2x2 - 8x - 5 crosses the x-axis.

OpenStudy (anonymous):

You don't really need a graphing calculator for this. All you need to do is set y=0 to find the x-int

OpenStudy (mertsj):

-.5 and 4.5

OpenStudy (anonymous):

THANK YOU SOO MUCH !

OpenStudy (mertsj):

yw

OpenStudy (anonymous):

a nice calc : https://www.desmos.com/calculator

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