[tex][Hello,BrainlyUser][/tex]
║ Answer║
[tex]\frac{7}{12}[/tex]
Step-by-step explanation:
Well, I think you did it like this: [Forgot the negative sign to 1/216]
[tex]\frac{1}{4}-2\sqrt[3]{\frac{1}{216}}[/tex]
[tex]\sqrt[3]{\frac{1}{216}}=\frac{1}{6}[/tex]
[tex]=\frac{1}{4}-2\cdot \frac{1}{6}=-\frac{1}{12}[/tex]
What it suppose to be:
[tex]\frac{1}{4}-2\sqrt[3]-{\frac{1}{216}}[/tex]
[tex]-2\sqrt[3]-{\frac{1}{216}}=-2*\frac{1}{6}[/tex]
[tex]=\frac{1}{4}-\left(-2\cdot \frac{1}{6}\right)[/tex]
[tex]=\frac{7}{12}[/tex]
[CloudBreeze]
