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Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion


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December 17th, 2016, 06:35 AM   #1
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I have looked in online tutorials on properties of proportion and elsewhere but no

I have looked all properties of proportion in online tutorials and in textbooks but nowhere I found this property.
if x,y,z are in continued proportion then
(x+y+z)/(x-y+z)=(x+y+z)²/x²+y²+z².
Please tell me which property this is.
x² means x squared.
(x+y+z)² means squared.
I hope you understand.
Thanks.

Last edited by skipjack; December 17th, 2016 at 08:00 AM.
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