Question

25(x-5y)^2-4(x-3y)^2​

Answer 1

Answer:

21x^2-226y+689y^2

Step-by-step explanation:

Answer 2

thanks for asking the questions

hope you understand

use this formula below

a²-b²=(a+b)(a-b)

solution

25(x-5y)^2-4(x-3y)^2​

[5(x-5y)]²-[2(x-3y)]²

(5x-25y)²-(2x-6y)²

(5x-25y-2x+6y)(5x-25y+2x-6y)

(3x-19y)(7x-31y)