Question

x^2-2y/y when x=20 and y=x/2

Answer 1

Answer:

I believe its 398

Step-by-step explanation:

Answer 2

Answer:

398

Step-by-step explanation:

x^2=400

substitute for y, 2y/y=(2*x/2)/(x/2)=x/(x/2)=x*(2/x)=2

400-2=398