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Question Number 64186 by Hope last updated on 15/Jul/19

Answered by Hope last updated on 15/Jul/19

((((√2) )^2 )/(x+y))+((((√2) )^2 )/(y+z))+((((√2) )^2 )/(z+x))≥((((√2) +(√2) +(√2) )^2 )/(2(x+y+z))) do≥((9×2)/(2(x+y+z))) (2/(x+y))+(2/(y+z))+(2/(z+x))≥(9/(x+y+z)) proved

(2)2x+y+(2)2y+z+(2)2z+x⩾(2+2+2)22(x+y+z)do⩾9×22(x+y+z)2x+y+2y+z+2z+x⩾9x+y+zproved

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