1.(6x–9y) (6x–9y) 2.(y+4) (y²+4y+16) 3.(2x+y) (x²+xy+y²) Please dijawab

1.36x^2-54xy-54xy+81y^2
36x^2+81y^2-108xy

2.y^3+4y^2+16y+4y^2+16y+64
y^3+8y^2+32y+64

3.2x^3+2x^2y+2xy^2+x^2y+xy^2+y^3
2x^3+y^3+3x^2y+3xy^2

Nb:^ artinya pangkat

Semoga Membantu +__+
Maaf Jika Salah