Question

Find the product of (2x + 5y)(2x - 5y).

Answer 1

4x^2-25y^2

Answer 2

@robtobey thank you so much . Do you think you could help me with another one?

Answer 3

Show your own work and many can help. It is hoped that robtobey will not just drop answers on you. There is no way to tell if you actually were "helped" on that last one. You SHOULD be able to recognize a Difference of Squares.

Answer 4

"Difference of Squares"
(a+b)(a-b) = a^2 - b^2