Question

find the product.
(4r+5)(4r-5)

Answer 1

Any ideas?

Answer 2

i completely forgot how to do this. I have an idea that foil is used..

Answer 3

Yes, FOIL will work.

Answer 4

16r^2-20r+20r-25?

Answer 5

@skullpatrol ^^^

Answer 6

so since the 20r cancels out my answer would be 16^2-25?

Answer 7

dont forget the r, but yes 16r^2

Answer 8

Correct.

Answer 9

16r^2-25

Answer 10

$$16r^2-25$$

Answer 11

awesome!! thanks guys!!! xoxo!!

Answer 12

np :)