Answer
2[(3y-4)(9$y^{2}$ +12y+16)]
Work Step by Step
54$y^{3}$-128=2(27$y^{3}$-64)=
2[$(3y)^{3}$ -$(4)^{3}$]=
2[(3y-4)($(3y)^{2}$ +(3y)(4)+$4^{2}$)=
2[(3y-4)(9$y^{2}$ +12y+16)]=
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