Question

(4+3 sqrt 3)(9-2 sqrt 3)

Answer 1

and what should we do with that?

Answer 2

36-8 sqrt 3 +21 sqrt 3 - (what?)

Answer 3

Simplify it

Answer 4

Do you know the FOIL method? :)

(a+b)(c+d) = ac + ad + bc + bd

Answer 5

27 sqrt 3*** not 21 sqrt 3

Answer 6

Let's keep it one question at a time, please.

Answer 7

That's what I used to get the equation above

Answer 8

Also, I guess you're using the app?

Answer 9

I used the foil method to get 36 - 8 sqrt 3 + 27 sqrt 3 -18 I just don't know what if the -18 part is right

Answer 10

I am using the app I am away from my computer at the moment

Answer 11

the -18 part is correct

I was just making sure because if had used latex, you wouldn't have been able to see it properly from the app

Answer 12

and your calculations are fine, you just need to simplify it now :)

Answer 13

Okay! So the simplified form is 18+ 19 sqrt 3

Answer 14

correct! :)