Question

Multiply out the brackets and simplify
(2b+1)(2b-1)

Answer 1

Heard about FOIL?

Answer 2

no sorry

Answer 3

\[(2b + 1)(2b - 1) \] \[\implies 2b(2b - 1) + 1(2b - 1)\]OK, do you get the above?

Answer 4

no i dont sorry

Answer 5

Hmm\[(a + b)(a +b) \implies a(a + b) + b(a + b)\]This is the general property.

Answer 6

ok yes i get it now

Answer 7

Right, so now do you get my first post?

Answer 8

yes i think so thank you

Answer 9

also... don't forget to use the distributive property for expanding!

Answer 10

yes thank you