Math, asked by izzathalkaf, 19 days ago

Show that root5 +root7 are irrational??​

Answers

Answered by snehapaswan186
1

Answer:

70 मीटर लम्बी एक ट्रेन का वेग 75किमी/घण्टा हैं, तो वह 105मीटर लम्बे प्लेटफामृ को कितने समय में पार करेगी?

Answered by madhavikotagiri13
1

Hence proved

let us assume that root7+root5 is rational

then root7+root5 =a/b where a and b are coprimes

then square on both sides

(root7+root5)^2 =(a/b)^2

(√7)^2 +(√5)^2 +2(√7)(√5)= (a/b)^2

7+2(√35)+5=(a/b)^2

2(√35)+12=(a/b)^2

√35=(a/b)^2-12

_________

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