Question

determinati perechile de numere intregi (x,y) care verifica egalitatile:

a) x×y=5

b) 7 supra x= -y

c) x+x×y=-3​

Answer 1

a) x={1,5}

y={5,1}

pt x= 1, y= 5

pt x= 5, y= 1

b) pt 7/x=-y

x={8,9,10,....}

c) x+x*y= -3

x{ -0,5}

y= 5