Question

(8x-9y)(8x+9y)

Answer 1

do you know difference of squares?

Answer 2

i havent heard of it in years, refresh my memory?

Answer 3

(8x)^2 - (9y)^2

Answer 4

difference of squares can be factored as:
\[\large a^2-b^2=(a+b)(a-b) \]
whichi is what you have...:)

Answer 5

oh so anytime i have that, i would just rewrite it as a^2 +b^2?

Answer 6

yep

Answer 7

i mean minus not plus

Answer 8

no, difference.. with a minus

Answer 9

so the answer will be

Answer 10

64x^2 - 81y^2

Answer 11

yea... ^^^

Answer 12

teamwork! thanks so much both of you <3

Answer 13

you welcome.