Question

9 (x+y)^2 -12 (x^2-y^2)+4(x-y)^2​ please give me answer fast I make you brainliest

Answer 1

#9x^2+9y^2-12x^2-12y^2+4x^2-4y^2

Bring like terms together

#9x^2-8x^2+9y^2-16y^2

# x^2-7y^2 ans