Applicare la formula: $\left(a+b\right)^4$$=a^4+4a^3b+6a^2b^2+4ab^3+b^4$, dove $a=\frac{3}{5}y$, $b=8$ e $a+b=\frac{3}{5}y+8$

Applicare la formula: $\left(ab\right)^n$$=a^nb^n$

Applicare la formula: $\frac{a}{b}c$$=\frac{ca}{b}$, dove $a=27$, $b=125$, $c=32$, $a/b=\frac{27}{125}$ e $ca/b=32\cdot \left(\frac{27}{125}\right)y^3$

Applicare la formula: $\frac{a}{b}c$$=\frac{ca}{b}$, dove $a=9$, $b=25$, $c=384$, $a/b=\frac{9}{25}$ e $ca/b=384\cdot \left(\frac{9}{25}\right)y^2$