Question

@snowskimwake would I work this one the same way? (see attachment)

Answer 1

\[(9+2\sqrt{3})(9-2\sqrt{3}\]

Answer 2

this one is easier, you only have to time the first terms of each together and the last terms of each

Answer 3

because the two middle ones cancel out, like in factoring

Answer 4

\[81\sqrt{3}\] is this right ?? @snowskimwake

Answer 5

\[81-4\sqrt{3}\]

Answer 6

almost, so close! remember to multiply the inside as well

Answer 7

of the √

Answer 8

3*3 is 9?? bu that is not a choice?

Answer 9

The answer is 69

Answer 10

no you have 81 - 4√9 but remember 4√9 is just 4(3)

Answer 11

so yes it is 69, very well done