Question

prove that root3 + 5 by 7 is irrational​

Answer 1

yes ,irrational sum is irrational

Answer 2

Answer:

it is irrational

Step-by-step explanation:

let assume that √3+√5/7 is irrational

then it will become

√3+√5/7=a/b

squaring on both sides

8+2√15/49=(a/b)^2

a^2-8b^2/49b^2=2√15

a^2-8b^2/98b^2=√15

the contradiction fact shows that √15 is irrational then a^2-8b^2/98b^2 is irrational also √3+√5 /7 is irrational