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Question Number 70161 by TawaTawa last updated on 01/Oct/19

Answered by mind is power last updated on 01/Oct/19

let a=(√((√5)+2))  b=(√((√5)−2))  a^2 +b^2 =2(√5)  ab=1  ⇒(a+b)=(√(a^2 +b^2 +2ab))=(√(2(√5)+2))=(√2).(√((√5)+1))  ⇒((a+b)/(√(√(5+1))))=(√2)  (√(3−2(√2)))=(√(((√2)−1)^2 ))=(√2)−1  answer=1

leta=5+2b=52a2+b2=25ab=1(a+b)=a2+b2+2ab=25+2=2.5+1a+b5+1=2322=(21)2=21answer=1

Commented by TawaTawa last updated on 01/Oct/19

God bless you sir

Godblessyousir

Commented by mind is power last updated on 01/Oct/19

y′re Welcom

yreWelcom

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