Question

guys help fast please....i will also mark u as the brainiest... please fast​

Answer 1

$(3x + 7y) \times (3x - 7y) \\ = 9x - 49y$

Answer 2

Answer:

(3x) sq. -(7y) sq

Step-by-step explanation:

identity 3....

(x) sq. - (y) sq. =(x+y) (x-y)

so here

x=3x y=7y

so...

answer is

(3x)sq.- (7y)sq.

hope it helps