colyerjo colyerjo
  • 13-09-2016
  • Mathematics
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square root of (20 - r) = r

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XxSocialNapkinxX
XxSocialNapkinxX XxSocialNapkinxX
  • 13-09-2016
R=4 because 20-4 = 16 and 4 times 4 = 16
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