Question

Simplify:

Answer 1

\[(5+2\sqrt{7})^{2}\]

Answer 2

\[(5+2\sqrt{7})(5+2\sqrt{7})\]Use FOIL to solve.

Answer 3

How do I use FOIL again? Its been so long.

Answer 4

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

Answer 5

That is so confusing.. I don't understand it at all. Things have to be shown to me step by step..

Answer 6

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

Answer 7

That just confused me even more.. thanks.

Answer 8

what's a(c + d) equal to?

Answer 9

I don't have any clue.. is there any easier way you could show me thiss??

Answer 10

Err ... what's 4*(10 + 11) equal to?

Answer 11

or just 4(10 + 11)

Answer 12

84..

Answer 13

is it true that 4(10 + 11) = 4*10 + 4*11 ?

Answer 14

Yes.

Answer 15

So is true that 4(c + d) = 4c + 4d ?

Answer 16

Yes.

Answer 17

And is true that a(c + d) = ac + ad ?

Answer 18

Yes..

Answer 19

and b(c + d) = bc + bd?

Answer 20

Mhmmm.