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If x+1 = y, then y²=x²+x+y
ITIWBS Posted Jul 25, 2015
http://www.google.com/search?q=Novellectual+Math+Challenge&oq=Novellectual+Math+Challenge&aqs=chrome..69i57.24740j0j4&client=tablet-android-verizon&sourceid=chrome-mobile&espv=1&ie=UTF-8
The Novellectual Math Challenge app listed under the header is good mental tuneup tool.
These are Android apps, should work for any Linux or Unix OS.
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If x+1 = y, then y²=x²+x+y
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