X^2-2xy+y(2x-1), при x=3, y=-1,6

Question

X^2-2xy+y(2x-1), при x=3, y=-1,6

Answer 1

X²-2xy+y(2x-1)=x²-2xy+2xy-y=x²-y
3²-(-1.6)=9+1.6=10.6