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Formula
Calculate the value
$\left( -2i \right) ^{ 28 }$
$2 ^ { 28 }$
Calculate the value
$\left ( \color{#FF6800}{ - } \color{#FF6800}{ 2 } \color{#FF6800}{ i } \right ) ^ { \color{#FF6800}{ 28 } }$
 Solve the power 
$\left ( \color{#FF6800}{ - } \color{#FF6800}{ 2 } \right ) ^ { \color{#FF6800}{ 28 } } \color{#FF6800}{ i } ^ { \color{#FF6800}{ 28 } }$
$\left ( \color{#FF6800}{ - } \color{#FF6800}{ 2 } \right ) ^ { \color{#FF6800}{ 28 } } i ^ { 28 }$
 Remove negative signs because negative numbers raised to even powers are positive 
$2 ^ { 28 } i ^ { 28 }$
$\color{#FF6800}{ 2 } ^ { \color{#FF6800}{ 28 } } \color{#FF6800}{ i } ^ { \color{#FF6800}{ 28 } }$
 Simplify the expression 
$\color{#FF6800}{ 2 } ^ { \color{#FF6800}{ 28 } } \color{#FF6800}{ \times } \color{#FF6800}{ 1 }$
$2 ^ { 28 } \color{#FF6800}{ \times } \color{#FF6800}{ 1 }$
 Multiplying any number by 1 does not change the value 
$2 ^ { 28 }$
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