Solve for y in terms of x:?

Question

1. x4+5=y2
2. y=^(x+3)
3. x3+y2=5
4. x2=y2
5.y2=x2-2x
6.y3=x2-2x

Answer 1

1. y=square root of (x^4+5)
2. y=^(x+3)
3. y=square root of (x^3-5)
4. y=square root of x^2
5. y=square root of (x^2-2x)
6. y=cube root of (x^2-2x)

Answer 2

1) x^4+5=y^2, y= sqrt(x^4+5), y=x^2+sqrt5
2)??
3)x^3+y^2=5, y^2=5-x^3, y=sqrt(5-x^3)
4)x^2=y^2, x=y
5)y^2=x^2-2x, y=x-sqrt2x
6)y^3=x^2-2x, y= cubicrt(x^2-2x)