Question

can someone help me add and subtract radical expressions

Answer 1

Hav u any questions on this?

Answer 2

yes
i cant add and subtract these radicals withe cube roots

Answer 3

its 3root2+ 3root81-3root54

Answer 4

3root21****

Answer 5

3root21+ 3root81-3root54 is the problem

Answer 6

3root21 or 3root27?

Answer 7

omg my bad its 3root24, im so sorry

Answer 8

24+81-54 all cubed

Answer 9

and rooted

Answer 10

if u dnt mind can u draw ur ques?

Answer 11

yes\[\sqrt[3]{24}+\sqrt[3]{81}-\sqrt[3]{54}\]

Answer 12

you there?

Answer 13

\(\sqrt[3]{24}=\sqrt[3]{2*2*2*3}\)
\(=2\sqrt[3]{3}\)

\(\sqrt[3]{81}=\sqrt[3]{3*3*3*3}\)
\(=3\sqrt[3]{3}\)

\(\sqrt[3]{54}=\sqrt[3]{3*3*3*2}\)
\(=3\sqrt[3]{2}\)
\(2\sqrt[3]{3}+3\sqrt[3]{3}-3\sqrt[3]{2}\)
Treat \(\sqrt[3]{3}\) as x and \(\sqrt[3]{2}\) as y.
Then u hav
\(2x+3x-3y\)
\(=5x-3y\)
\(=5\sqrt[3]{3}-3\sqrt[3]{2}\)
Is that clear?

Answer 14

Is t clear?

Answer 15

yes,completly

Answer 16

fyn then.:)