factoring expressions

Question

 

32y²-48y+18

Answer 1

32y^2-48y+18

2(16y^2-24y+9)

16*9=2*2*2*2*3*3=(2*2*3)*(2*2*3)=12*12 and 12+12=24 and the fact that the trinomial now with the 2 factored out is a square, the square of a binomial

can you finish it ??