how do you find the exact value of a square number?

Question

anonymous · Answer

if it's rational using your calulator

jwheele1 · Answer

give an example and ill show you

anonymous · Answer

@jwheele1  sqrt(2)

jwheele1 · Answer

i make a chart. To square something you multiply it by itself 1 time.


1* 1 = 1
2 *2 = 4
3 * 3 = 9
4
5
6
7
8
9

jwheele1 · Answer

I do this on my paper for squares and cubes before i start my tests

jwheele1 · Answer

the numbers on the right are called perfect squares and there roots are the number on the left

jwheele1 · Answer

2 is not a perfect square so it not a whole number

jwheele1 · Answer

sooo.....lets see

jwheele1 · Answer

jwheele1 · Answer

Honestly...I mostly use a calculator.

jwheele1 · Answer

answer: 1.414213562373095    lol

jwheele1 · Answer

trial and error?

anonymous · Answer

@jwheele1 is 2 a whole number or not?

jwheele1 · Answer

yes

jwheele1 · Answer

but it is not a perfect square so the square root of 2 is not a whole num

jwheele1 · Answer

that link shows you 2 methods by hand that i have never tried before

anonymous · Answer

ya you mentioned a wrong statement in tthe comments

jwheele1 · Answer

wait, what did i do?

anonymous · Answer

"2 is not a perfect square so it not a whole number"
XD

jwheele1 · Answer

OH...what i meant by IT was the square root of 2...IT is not a whole number

anonymous · Answer

sqrt(2) isn't a rational number

jwheele1 · Answer

true

jwheele1 · Answer

it is 1.414213562373095

jwheele1 · Answer

it is irrational because it goes on forever without repeating.

anonymous · Answer

yes