(5-2y) (3-5y) Bang dong kaka

(5-2y)(3-5y)
15-25y-6y+10y^2
15 -31y+10y^2
maaf jika salah

prosesnya :
5 .3 = 15
5 .-5y = -25y
-2y .3 = -6y
-2y .-5y = 10y²
semoga membantu