Question

prove that 4 root 7 is irrational​

Answer 1

SOLUTION:-

Let, 4√7 is a rational number which is in the form of p/q in which p and q are

co-primes.

• 4√7=p/q
• √7=p/q/4

√7 is a irrational number

p/q/4 is a rational number

We know that,

rational is not equal to irrational

therefore.....

4√7 is a irrational number.

It is a contradiction due to the wrong assumption that 4√7 is a rational number.

hope the answer helps you....

Answer 2

the second one is of √5 but √7 will be same as this one

just put the values correctly

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