What is the square root of 81

Question

aripotta · Answer

use a calculator, though i think everyone should know this

hero · Answer

What's 9 x 9 = ?

anonymous · Answer

well gezz i thought thats what the question bored was for.. questions

aripotta · Answer

on the calculator, just put in 81, then push the square root button

aripotta · Answer

well, i'm just saying...sorry if that sounded rude or anything, i didn't mean to be.

anonymous · Answer

were cool :D

aripotta · Answer

i'm guessing you have the answer now? or do you still need help?

anonymous · Answer

no thank you i have it thanks for the help

wwe123 · Answer

the square root of 81 is
+9 or -9

wwe123 · Answer

+9 and -9

aripotta · Answer

$$\pm9$$

aripotta · Answer

:)

directrix · Answer

@wwe123 @AriPotta @grapehead

The square root of 81 refers to the principal square root (positive) of 81 which is 9 and only 9.

If you are solving the equation x^2 = 81, then x = 9 or x = -9.

aripotta · Answer

i'm sure it could be either/or. it's technically correct.

hartnn · Answer

directrix is correct

hartnn · Answer

x=$\sqrt{81}$ can only have 1 root because its the equation with degree=1

hartnn · Answer

when you square it, u attach an extra root to it

hartnn · Answer

x^2=81 had 2 roots

aripotta · Answer

......ok

aripotta · Answer

-_- i got that. thanks.

wwe123 · Answer

no
9*9 =81
-9*-9=81
so, $$\sqrt{81} =\pm9$$

hartnn · Answer

@wwe123 please clear your basic algebra concepts.

wwe123 · Answer

@Directrix

aripotta · Answer

omg just drop it.

aripotta · Answer

and you guys are freaking deleting your posts again. that really aggravates me

hartnn · Answer

@AriPotta we just want u to have clear basics so that u do not misguide others while helping....

aripotta · Answer

yea, and i said i understood it.

aripotta · Answer

so idk why we keep discussing it. and why you guys are deleting comments.