Question

Add. Simplify by collecting like radical terms if possible
18 sqrt 80 + 6 sqrt 80 =

Answer 1

Since the number in the square root is the same just add the coefficients on the outside:
24sqrt(80)

Answer 2

Then you simply because 80 can be written in factored form as : 16 x 5. Sqrt(16 x 5) = 4 sqrt (5)
So finally we have 72sqrt(5)

Answer 3

do I have to write down the ()s

Answer 4

I don't get your question

Answer 5

do I have to write sqrt (5)

Answer 6

or just 72sqrt 5

Answer 7

yes :
\[72\sqrt{5}\]

Answer 8

thanks

Answer 9

you're welcome

Answer 10

next question
simplify 3sqrt 27