Question

4 (x-y)² - 12 (x-y) (x+y) +9 (x+y)²​

Answer 1

Answer:

(x+5y)^2

Step-by-step explanation:

hope this answer helped you

Answer 2

Answer:

x^2+25y^2+10xy

Step-by-step explanation:

here ,

4 (x^2+y^2-2xy)-12 (x^2-y^2)+9 (x^2+y^2+2xy)

== 4x^2+9x^2-12x^2+4y^2+12y^2+9y^2+18xy-8xy

== ( answer)