Question

(7u+6v)(7u-6v)
how can u do this?

Answer 1

Difference of squares.

Answer 2

\[(a+b)(a-b)=a^2-b^2\]

Answer 3

You can FOIL it

Answer 4

\[a=7u , b=6v\]

Answer 5

7u*7u=49u^2
7u*6v and 7u*-6v cancel out
6v*-6v=-36v^2
49u^2-36v^2

Answer 6

so 49u^2-36v^2 will be the answer cuz i get something different? =(

Answer 7

yes it is

Answer 8

thanks very much =)