Question

What is the exact value of the expression the square root 72. − the square root of 8. + the square root of 128.? Simplify if possible.

Answer 1

\(\sqrt{72}-\sqrt{8}+\sqrt{128}\)
this , right ?
can you factor,
72 =.... ?
8=...?
128 =...?

Answer 2

72 = 6 sqrt of 2
8 = 2 sqrt of 2
128 = 8 sqrt 2

Answer 3

Well, add them up.

Answer 4

good!
now just factor out sqrt 2 from each term :)
can u ?

Answer 5

So It would look like ( 6-2+8) sqrt of 2 ?

Answer 6

exactly!

Answer 7

which would be 12sqrt of 2

Answer 8

that would be correct :)
you are good at this! :)

Answer 9

Thank you but dividing is my problem actually .

Answer 10

any particular problem ?