Question

Find the exact value of the radical expression in simplest form.

Answer 1

\[\sqrt{4y^3}- \sqrt{y^3}\]

Answer 2

hey,

You will need to CONJUGATE the expression. Do you know how to CONJUGATE or what CONJUGATION is?

Answer 3

yea this is what i got \[y \sqrt{3y}\]

Answer 4

2min working it out

Answer 5

how did you get that answer?

Answer 6

i misused it in a calculator

Answer 7

i conjugated but only got until: \[\frac{ 4y^3 - y^6 }{ \sqrt 4y^3 + \sqrt y^3 }\]

Answer 8

\[\sqrt{3y^3}\]

Answer 9

did you get that?

Answer 10

yea

Answer 11

what did you do after that point?

Answer 12

take away the 2 sqared

Answer 13

the u get \[y \sqrt{3y}\]

Answer 14

right?

Answer 15

the final answer is the one i posted above. it must be. theres nothing else you can do

Answer 16

@hartnn help?

Answer 17

are you sure?

Answer 18

\[\sqrt{4y^3}- \sqrt{y^3}=2\sqrt{y^3}- \sqrt{y^3}=\sqrt{y^3}\] is a start

Answer 19

then
\[\sqrt{y^3}=\sqrt{y^2}\sqrt{y}=y\sqrt{y}\]

Answer 20

oooo that makes sence thank you

Answer 21

there isn't any fraction
no need for a conjugate

Answer 22

yw