Question

Simplify the expression: see attachment.

Answer 1

what have you attempted so far?

Answer 2

I have:

\[9x ^{2}\sqrt{10} \times y ^{2}\sqrt{2}\]

Answer 3

correct so far :)

Answer 4

Oh okay. So multiply?

\[9x ^{2}y ^{2}\sqrt{20}\]

Answer 5

again correct - keep going...

Answer 6

HINT: Write 20 as a product of its prime factors

Answer 7

\[18x ^{2}y ^{2}\sqrt{5}\]

Answer 8

perfect! :)

looks like you are a pro at this now :)

Answer 9

Thank you!

Answer 10

yw :)