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OpenStudy (anonymous):
how do you find the large root ?? example : 7x^2-2=2
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OpenStudy (inkyvoyd):
Ok.
OpenStudy (inkyvoyd):
Add four to bth sides. divide by seven. take the positive square root there you go.
OpenStudy (inkyvoyd):
Make sure to rationalize the denom, or you'l lose points
OpenStudy (anonymous):
why do we add 4 to both sides ?
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