Question

r^2-d^2 factor completely.

Answer 1

@melissa1094 so do you know formula of difference of two squares ?

Answer 2

no i dont /:

Answer 3

so can you tell me what is equal (a-b)(a+b) = ?

Answer 4

would it be (a+b)^2

Answer 5

why ?

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

right ?

but there i have wrote (a+b98a-b)

yes ? so than ?

Answer 6

sorry there i have wrote (a+b)(a-b)

Answer 7

so it wouldnt be (a+b)^2? all i know is that it has something to do with special product rules.

Answer 8

ok so you know that
r*r-d*d=(r-d)(r+d)=r^2 +rd -rd -d^2 =r^2 -d^2

Answer 9

ok ?

Answer 10

(r+d)(r-d)