Question

use the difference of squares rule to factor the following expression 9x^2-49y^2
What are they talking about??

Answer 1

can u show me so I know

Answer 2

\[(3x)^2-(7y)^2\implies (3x+7y)(3x-7y))\]

Answer 3

a^2 - b^2 = (a-b)(a+b)
you must use this formula

Answer 4

Good video here for you
http://www.khanacademy.org/video/factoring-difference-of-squares?playlist=Developmental+Math+2

Answer 5

They are talking about the difference of square formula i.e.
\[a^2 - b^2 = (a-b)(a+b)\]

Answer 6

Watch the video and become one with the force
http://www.khanacademy.org/video/factoring-difference-of-squares?playlist=Developmental+Math+2

Answer 7

Okay Thank you guys

Answer 8

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