Question Number 205306 by peter frank last updated on 15/Mar/24
Answered by A5T last updated on 15/Mar/24
$$\mathrm{2}\left(\mathrm{3}{x}^{\mathrm{2}} +\mathrm{4}{xy}\right)=\mathrm{450}\Rightarrow\mathrm{3}{x}^{\mathrm{2}} +\mathrm{4}{xy}=\mathrm{225} \\ $$$$\Rightarrow{y}=\frac{\mathrm{225}−\mathrm{3}{x}^{\mathrm{2}} }{\mathrm{4}{x}}\Rightarrow{v}=\mathrm{3}{x}^{\mathrm{2}} {y}=\frac{\mathrm{3}{x}\left(\mathrm{225}−\mathrm{3}{x}^{\mathrm{2}} \right)}{\mathrm{4}} \\ $$$$=\frac{\mathrm{675}{x}−\mathrm{9}{x}^{\mathrm{2}} }{\mathrm{4}} \\ $$
Commented by peter frank last updated on 17/Mar/24
thank you
Commented by peter frank last updated on 17/Mar/24
help to solve Qn 2