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

Answers:
3
15-4√3
3-7√3

Question

Multiply and simplify: (3 + √3) (5 - 4√3)

Answers:
3
15-4√3
3-7√3

anonymous · Answer

Do you know how to do the problem?  Try?

anonymous · Answer

Foil or whatever.

owlcoffee · Answer

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?

anonymous · Answer

ummm I don't really get it :/

owlcoffee · Answer

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

anonymous · Answer

okay, ill try

anonymous · Answer

You gotta learn to multiply.

anonymous · Answer

im lost, this is helpless -.-

anonymous · Answer

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

owlcoffee · Answer

Oh Wio, don'te be so mean :(.

Charlie, start by operating the most simple thing.

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

3-7sqrt(3)