Question Number 5943 by sanusihammed last updated on 06/Jun/16
$${P}\:=\:\mathrm{9}{x}\:+\:\mathrm{8}{y} \\ $$$${xy}\:=\:\mathrm{2} \\ $$$$ \\ $$$${find}\:\:{p}. \\ $$
Answered by FilupSmith last updated on 06/Jun/16
$$\left(\mathrm{1}\right)\:\:{x}=\frac{\mathrm{2}}{{y}} \\ $$$${P}=\frac{\mathrm{18}}{{y}}+\mathrm{8}{y} \\ $$$$ \\ $$$$\left(\mathrm{2}\right)\:\:\:{y}=\frac{\mathrm{2}}{{x}} \\ $$$${P}=\mathrm{9}{x}+\frac{\mathrm{16}}{{x}} \\ $$