Question

1. Multiply and simplify.
a) (b + 2)(b + 2)
b) (x + 3)(x – 3)

Answer 1

(b+2)(b+2)
=(b+2)^2
= [ (a+b)^2 = a^2 + 2ab + b^2
=here a=b
and b= 2
substitute is the equation you will get it

Answer 2

Thank you, so for the b part how did you get 2? @lalipapa123

Answer 3

thats just the formula to foil

(a+b)(a+b) = a^2 + ...
(b+ 2)(b+2)= b^2 + ...

Answer 4

so for the a question. (b + 2)(b + 2) =
(b+2)^2 =
a^2 + 2ab + b^2
what do i do next, if i did the above correct?

Answer 5

http://www.algebrahelp.com/lessons/simplifying/foilmethod/pg2.htm

Answer 6

the second one is like (a+b) (a-b)=(a^2-b^2)