Question

if root 5 is an irrational, no prove that 7+3root 5 is irrational

Answer 1

Answer:

Hey here's what you need

Explanation:

let 7+3√5 is rational number which is equal to p/q

where p,q,7,3,√5 are rational number

putting 7 and 3 on right hand side we get

√5=p-7q/3q

Here p, -7q and 3q all are rational

but √5 is irrational (given)

so the given number is irrational.