Question

x-6square root of x=16

Answer 1

\[x-6\sqrt{x}=16\]

\[x-16=6\sqrt{x}\]
now square both sides

Answer 2

x=64

Answer 3

\[(x-16)^2=36x\]
\[x^2-32x+256=36x\]
\[x^2-68x+256=0\]

Answer 4

\[(x-4)(x-64)=0\]
\[x=4\] or \[x=64\] and you have to check both answers because you squared

Answer 5

4 does not work (by checking) but 64 does