Answer :
If we have that
[tex]\frac{4}{y}=y[/tex]This is equivalent to:
[tex]4=y^{2}[/tex]If we solve for y, we get a square root. A square root has a positive and a negative result, so:
[tex]y=\pm\sqrt[]{4}=\pm2[/tex]y = 2 and y = -2
If we have that
[tex]\frac{4}{y}=y[/tex]This is equivalent to:
[tex]4=y^{2}[/tex]If we solve for y, we get a square root. A square root has a positive and a negative result, so:
[tex]y=\pm\sqrt[]{4}=\pm2[/tex]y = 2 and y = -2