Question

Simplfy (7x+3y)^2-(7x-3y)^2

Answer 1

Answer:

applying a^2-b^2 formula.

Step-by-step explanation:

here,a=7x+3y, b=7x-3y

now applying formula a^2-b^2= (a+b) (a-b)

(7x+3y+7x-3y) (7x+3y-7x+3y)

cancelling unlike terms,

(14x) (6y)