Question

Multiply and simplify: (3 + √3) (5 - 4√3)

Answers:
3
15-4√3
3-7√3

Answer 1

Do you know how to do the problem? Try?

Answer 2

Foil or whatever.

Answer 3

Let's apply what is called "distributive":
\[(3+\sqrt{3})(5-4\sqrt{3})\]
we'll end up with:
\[(3)(5)-(3)(4\sqrt{3})+(\sqrt{3})(5)-(\sqrt{3})(4\sqrt{3})\]
think you can take over from here?

Answer 4

ummm I don't really get it :/

Answer 5

All I did was multiplying, he rest is pretty much using properties and simplifying.

Answer 6

okay, ill try

Answer 7

You gotta learn to multiply.

Answer 8

im lost, this is helpless -.-

Answer 9

i don;t even know where to start...

Answer 10

Oh Wio, don'te be so mean :(.

Charlie, start by operating the most simple thing.

Answer 11

that the point, I don't know where that even is

Answer 12

I don't mean learn to multiply like arithmetic, I mean learn to multiply binomials.

Answer 13

3-7sqrt(3)