Answer :
x = 10/y,
so[tex] 2 \times x/y \times y^2[/tex]
= [tex]2 \times \frac{10/y}{y} \times y^2 [/tex]
= [tex]= 2\times 10y^2/y^2[/tex]
=[tex]=2\times 10 =20[/tex]
so[tex] 2 \times x/y \times y^2[/tex]
= [tex]2 \times \frac{10/y}{y} \times y^2 [/tex]
= [tex]= 2\times 10y^2/y^2[/tex]
=[tex]=2\times 10 =20[/tex]