Question

simplify:

Answer 1

\[\sqrt{9\times 7}\] is as start

Answer 2

okay so then you would do radical nine times radical 7?

Answer 3

yes

Answer 4

that equals..hold up

Answer 5

then you would note that \(\sqrt{9}=3\)

Answer 6

so it would equal something like 7.937253933.... right?

Answer 7

hello?

Answer 8

yah you will get it

Answer 9

well the question only has 4 answer choices:

radical 24
radical 63
3 radical 7
or none of the above


i said none of the above

Answer 10

\[
\begin{array}
~\sqrt{3}\sqrt{21} &=\sqrt{3}\sqrt{3\cdot7}
\\~\\&= \sqrt{3\cdot3\cdot7}
\\~\\&= \sqrt{9\cdot7}
\\~\\&= \sqrt{9}\sqrt{7}
\\~\\&= \boxed{3\sqrt{7}}
\end{array}
\]

Answer 11

oh so the answer would be 3 radical 7?

Answer 12

Yep

Answer 13

Do you understand what I did so far?

Answer 14

okay, thank you :)

Answer 15

do you mind helping me with another one?

Answer 16

Close this question, then create new question

Answer 17

okay :)

Answer 18

You already have 3rd option, 3 radical 7 nah?????
\[\sqrt{3}\times \sqrt{21}\]
\[\sqrt{3\times21}\]
\[\sqrt{3*3*7}\]
\[3\sqrt{7}\]