Math, asked by shahajibhange, 11 months ago

prove that 5 + 2√7 is an irrational number,where √7 is given to be an irrational number

Answers

Answered by nallayashwanth

2

Answer:

Yes 5+2root7 is an irrational

Step-by-step explanation:

Let us assume 5+root7 as rational number

where 5+root7 = a/b

then, root7 = a/b-5

root7 = a-5b/b

but we know that root7 as irrational so,

our assumption is wrong

therefore, 5+root7 is an irrational number

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