Question

How do you find the cube roots of -64?

Answer 1

-4

Answer 2

Ninj'ad

Answer 3

damn!

Answer 4

make it an imaginary number first

Answer 5

no just -4

Answer 6

-4*-4*-4=-64

Answer 7

actually nvm its a cube root

Answer 8

u dont need to saifoo stop confusing me

Answer 9

yea so u can have negative no.s under it :)

Answer 10

\[\Huge -4\]

Answer 11

lol. My bad. :(

Answer 12

hi angela

Answer 13

i would write that as 4i

Answer 14

@Hahd Hi!

Answer 15

zbay -64i thats what you get with 4i

Answer 16

keep it -4

Answer 17

\[\Huge \color\red {-4}\]

Answer 18

\[\color{salmon}{\huge{\checkmark}}\]

Answer 19

actually there should be 3 roots -4 is only one of them???

Answer 20

3 roots? O.o

Answer 21

cube roots of -64???

Answer 22

there are no roots its not an equation someone's sleepy

Answer 23

\[\Huge \color\green \blacksquare\]

Answer 24

this is rite

Answer 25

\[\Huge \color\yellow \blacksquare\]

Answer 26

this one matches! :)

Answer 27

Saif....teach me tht...

Answer 28

x^3 = -64
x^3 + 64 = 0
(x + 4)(x^2 + 16 -4x) = 0
x = -4

x^2 + 16 -4x=0

\[x = \frac{4 \pm \sqrt{16 - 64}}{2}\]

Answer 29

now solve them

Answer 30

you will get your three

Answer 31

angela, check your facebook.

Answer 32

thanksss

Answer 33

ishaan i hate to poinnt it out but ur b value is wrong

Answer 34

how about this?

\[\Huge \bigodot\]

Answer 35

Punch here^

Answer 36

are you sure hahd ?

Answer 37

u put the constant

Answer 38

oh nvm

Answer 39

check that again hahd I am sure it's not like that

Answer 40

lol its 7 in the morning

Answer 41

lol

Answer 42

real answer would be -4

Answer 43

ready to be sensei today imran
good morning : )

Answer 44

but there are three roots so two additional roots
are 4(cos 60+ i sin 60)
\[2+i\sqrt{3}\]
and its conjugate
\[2-i\sqrt{3}\]

Answer 45

morning ishaan