can someone help with next step? plz
Hello realistic$\displaystyle x = k - \frac{\sqrt{pz}}{y}$
$\displaystyle \Rightarrow x-k=-\frac{\sqrt{pz}}{y}$
$\displaystyle \Rightarrow k-x=\frac{\sqrt{pz}}{y}$
$\displaystyle \Rightarrow (k-x)y=\sqrt{pz}$
$\displaystyle \Rightarrow y = \frac{\sqrt{pz}}{k-x}$
Grandad