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OpenStudy (anonymous):
Solve. 7x^2 - 63 = 0 x = 7 and x = 9 x = 9 and x = 3 x = 3 and x = -3 x = 3 and x= 7
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OpenStudy (mertsj):
3 and -3
hero (hero):
7x^2 - 63 = 0 7x^2 = 63 x^2 = 63/7 x^2 = 9 x = +3 x = -3
OpenStudy (pokemon23):
"hero link down below" http://openstudy.com/study#/updates/4f14ec5ee4b0b9109c921eb8
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