Question

A guide to sqrt and cbrt

Answer 1

So first of all what is a sqrt? To put it simply, a square root is the number that can multiply itself by twice to get the desired answer. For example the square root of 64 is 8 or 8 as 8*8=64 and -8*-8 is 64.

Answer 2

A square root can be a negative however the number inside the square root can also be, but it would require imaginary numbers in which i^2=-1 so sqrt(-36) would be 6i. As 6*i*i*6=36*-1=-36. To find the sqrt of a fraction you would find the sqrt of the numerator and then the sqrt of the denominator. For example: sqrt(100/9)-->10/3 as 10/3*10/3=100/9.

Answer 3

Next, what about when a number cannot be sqrted? First you would split the number you have into two factor parts: the part that you can sqrt and the part you can't, sqrt the part you can and put it outside leave the rest inside. For example sqrt(18) in which 18 itself is not but if you split it into sqrt(9*2) then you have 3sqrt(2).

Here is a list of the squares of numbers up to 12:
1*1=1 2*2=4 3*3=9 4*4=16
5*5=25 6*6=36 7*7=49 8*8=64
9*9=81 10*10=100 11*11=121 12*12=144

Answer 4

Now cbrt is essentially the same however its the number multiplied 3 in a row.
So everything should be adjusted accordingly, for example cbrt(18) would remain this way as 18=3*3*2 and as you can see no number happens 3 times. Also the number inside a cbrt can be a negative as three negatives multiplied will be a negative. For example cbrt(-27)=-3*-3*-3!
A list of cubes up to 10(google calculator was used):
1*1*1=1 2*2*2=8 3*3*3=27
4*4*4=64 5*5*5=125 6*6*6=216
7*7*7=343 8*8*8=512 9*9*9=729
10*10*10=1000

Answer 5

All my past tutorials!
https://questioncove.com/study#/updates/608f73452035c39be5ecfa0 fractions
https://questioncove.com/study#/updates/608dbe8b5b828f43d548ec00 Equations part 1
https://questioncove.com/study#/updates/608f22bc9365c25ed592c00 equations with substitution

Answer 6

@xxquintonxx is this good? should i add anything :)

Answer 7

also if u want to request a subject feel free to comment just keep it on topic :)

Answer 8

e.e give me a sec to read it all

Answer 9

xd

Answer 10

cool since u seem to be on this unit u could bookmark this or sumthing e.e

Answer 11

yup its all good thank you :)

Answer 12

yw :))))

Answer 13

ah i see is there anything you need help with :)?

Answer 14

cuz i did 1 thing for sqrt then it jumped me to coordinate stuff then now I'm in angel stuff XD

Answer 15

i see do u need help with coordinates :p was thinking of doing one

Answer 16

no im good you have refreshed my mind on how to do em

Answer 17

haha cool yw :))))

Answer 18

@crispyrat I recommend using latex...

Sqrt:
`\(\sqrt{16}\)` \(\rightarrow\) \(\sqrt{16}\)
`\(\sqrt{\dfrac{1}{6}}\)` \(\rightarrow\) \(\sqrt{\dfrac{1}{6}}\)

Cbrt:
`\(\sqrt[3]{16}\)` \(\rightarrow\) \(\sqrt[3]{16}\)

Multiply:
`\(2 \times 3\)` \(\rightarrow\) \(2 \times 3\)

Answer 19

@vibes

Answer 20

?

Answer 21

oh vibes already saw the post lol he gave me a medal

Answer 22

oh lol

Answer 23

if u have any tutorial requests feel free to leave a post :))))

Answer 24

My only request is for you to use latex <.< like what @extrinix said

Answer 25

thx!

Answer 26

It would be helpful to have a few HS geometry guides

Answer 27

Bro, this person should be a teacher if he/she isn't already.

Answer 28

Lol, np.

Answer 29

:p

Answer 30

Eh?

Answer 31

Thank you for the help. The user's will appreciate this (: Especially the newbs.

Answer 32

ok would yall be intrested in a tutorial on coordinates?
it may take some more time cus i wanna try latex