What is x^2 + v = w when you have to make x the subject

im really stuck

Substract v to both sides of the equation: x^2+v-v = w-v

you get x^2=w-v

Now take the square root of both sides: root (x^2) = root (w-v)

you get x = sq root (w-v) or x = + / - sq root (w-v)

X²+v=w (move v to w)

x²=w-v

x=√w-v (then square root w-v)