Question

do it step by step".................

Answer 1

Here u go!!!!!!!!!!!!!

Answer 2

25x²-4y²+49z²-28y²

25x²-(4y²+49z²-28yz)

a²+b²-2ab=(a+b)²

25x²-(2y-7z)²

a²-b²=(a-b) (a+b)

(5-(2y-7z)) (5+(2y-7z))

(5-2y+7z)(5+2y-7z)

Plzz mark me the brainliest