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OpenStudy (anonymous):
pls help me on this problem the problem is in the comments
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OpenStudy (anonymous):
OpenStudy (anonymous):
take a breath... and think. if 5x^2-80=0, then 5x^2=80. divide both sides of the eq. by 5, and you get x^2= 16. now take the sq. roots of both sides... x=4.
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