maithuyduongsunny maithuyduongsunny 06-08-2021 Mathematics contestada (x^2+12x+36)-(x-1)^2 x^2-4xy+4y^2 16x^2-8x+1 x^2+4x+4 4x^2+12xy+9y^2 x^2-8x-16 4x^2-16 x^2-1 x^2+6x+9 9x^2-25y^4 16x^2-8x+1