Question

(x+18)^1/2+2=x

Answer 1

-9 , -2, 7 or -2 and 7

Answer 2

now this is where you have to isolate:
\[(x+18)^{\frac{1}{2}}=x-2\]
\[x+18=(x-2)^2=x^2-4x+4\]
\[x^2-5x-14=0\]
\[(x+2)(x-7)=0\]
\[x=-2\]
\[x=7\] but you have to check your answers!

Answer 3

7 works, -2 does not

Answer 4

k