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Formula
Calculate the value
$\left( -2 \sqrt{ 2 } \right) ^{ 2 }$
$8$
Calculate the value
$\left ( \color{#FF6800}{ - } \color{#FF6800}{ 2 } \sqrt{ \color{#FF6800}{ 2 } } \right ) ^ { \color{#FF6800}{ 2 } }$
 Solve the power 
$\left ( \color{#FF6800}{ - } \color{#FF6800}{ 2 } \right ) ^ { \color{#FF6800}{ 2 } } \left ( \sqrt{ \color{#FF6800}{ 2 } } \right ) ^ { \color{#FF6800}{ 2 } }$
$\left ( \color{#FF6800}{ - } \color{#FF6800}{ 2 } \right ) ^ { \color{#FF6800}{ 2 } } \left ( \sqrt{ 2 } \right ) ^ { 2 }$
 Remove negative signs because negative numbers raised to even powers are positive 
$2 ^ { 2 } \left ( \sqrt{ 2 } \right ) ^ { 2 }$
$\color{#FF6800}{ 2 } ^ { \color{#FF6800}{ 2 } } \left ( \sqrt{ 2 } \right ) ^ { 2 }$
 Calculate power 
$\color{#FF6800}{ 4 } \left ( \sqrt{ 2 } \right ) ^ { 2 }$
$4 \left ( \sqrt{ \color{#FF6800}{ 2 } } \right ) ^ { \color{#FF6800}{ 2 } }$
 If you square the radical sign, it will disappear 
$4 \times \color{#FF6800}{ 2 }$
$\color{#FF6800}{ 4 } \color{#FF6800}{ \times } \color{#FF6800}{ 2 }$
 Multiply $4$ and $2$
$\color{#FF6800}{ 8 }$
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