Question

What is one example of an irrational number and a rational number?

Answer 1

A rational is a number which could be written in the form of p/q or fraction.
For Example \[\sqrt{4}\] = 2 which is understood 4/1.
So \[\sqrt{4}\] is a rational number and \[\sqrt{3}\] is an irrational number.

Answer 2

u got it?

Answer 3

To prove that a number is irrational we usually assume it is rational and then prove it leads to a contradiction.

Answer 4

also a rational number can be written as a fraction e.g. 2/3
whereas an irrational cannot
many square roots are irrational like sqrt2 , sqrt5, sqrt7

Answer 5

Any squareroot of a prime is irational

Answer 6

right - also square root of some even numbers like 8, 12

Answer 7

That you get by writing those numbers as a multiplication of primes: 8=2*2*2, 12=2*2*3 and what is left in the squareroot is a prime, therefore irrational