Hasil dari 3x(−9x+15y)=....3x(-9x+15y)=....3x(−9x+15y)=....
−27x2+45xy-27x^2+45xy−27x2+45xy
−27x2+45(x+y)-27x^2+45(x+y)−27x2+45(x+y)
−27x2+15xy-27x^2+15xy−27x2+15xy
18x2y18x^2y18x2y