Question Number 137472 by mr W last updated on 03/Apr/21
![solve x^3 −2[x]=5](Q137472.png)
$${solve} \\ $$$${x}^{\mathrm{3}} −\mathrm{2}\left[{x}\right]=\mathrm{5} \\ $$
Answered by MJS_new last updated on 03/Apr/21
$$\left(\mathrm{1}\right)\:\:\mathrm{1}<{x}<\mathrm{2} \\ $$$${x}^{\mathrm{3}} =\mathrm{7}\:\Rightarrow\:{x}=\mathrm{7}^{\mathrm{1}/\mathrm{3}} \\ $$$$\left(\mathrm{2}\right)\:\:\mathrm{2}<{x}<\mathrm{3} \\ $$$${x}^{\mathrm{3}} =\mathrm{9}\:\Rightarrow\:{x}=\mathrm{9}^{\mathrm{1}/\mathrm{3}} \\ $$
Commented by mr W last updated on 03/Apr/21
$${thanks}\:{sir}! \\ $$