Question

Multiplying simplified square roots?

Answer 1

\[12\sqrt{2}\times7\sqrt{2}=\]

Answer 2

they are square roots, not squares

Answer 3

do the same thing I told you

Answer 4

Multiply what's outside the root separately and what's inside separately.
12 x 7 = 84
2 x 2 = 4
84√4 = 168

Answer 5

Replace \[\sqrt{2}\] with x so you have
\[12x \times 7x\]

Answer 6

ok. so it would be \[84\sqrt{2}\]

Answer 7

yes

Answer 8

\[12\sqrt{2}\times7\sqrt2=(12\times\sqrt2)\times(7\times\sqrt 2)\]\[=(12\times7)\times(\sqrt2\times\sqrt 2)\]\[=\]

Answer 9

@beeqay You would have to multiply what's inside too.

Answer 10

\[\neq84\sqrt2\]

Answer 11

so then it would be \[84\sqrt{4}\]
then
84X2
?
168

Answer 12

\[(\sqrt 2\times\sqrt 2)=\sqrt2^2=2\]

Answer 13

@Calcmathlete yes, that is the point.
Apologies, you forgot to multiply \[\sqrt{2} \times \sqrt{2}\]

Answer 14

@ipacpc Bingo!

Answer 15

yeah that is right

Answer 16

thanks everyone!

Answer 17

You're welcome!

Answer 18

\[84x^2= 84(\sqrt{2})^2\]