Equivalent forms of expressions with complex numbersWhich expressions are equivalent to 1 ( 9 i + z ) 4 + 1 ( 9 i − z ) 4 Select all that apply. 18 i ( 81 − z ) 8 − 18 i ( 81 + z ) 8 18 i ( 81 + z ) 8 − 18 i ( 81 − z ) 8 Could someone walk me through this thoroughly? I would be incredibly grateful.

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Equivalent forms of expressions with complex numbersWhich expressions are equivalent to             1              (        9        i        +        z                  )          4                      +            1              (        9        i        −        z                  )          4                     Select all that apply.                     18        i                    (        81        −        z                  )          8                                        −        18        i                    (        81        +        z                  )          8                                        18        i                    (        81        +        z                  )          8                                        −        18        i                    (        81        −        z                  )          8                    Could someone walk me through this thoroughly? I would be incredibly grateful.

sepolturamo · Accepted Answer

1              (        9        i        +        z                  )          4                      +            1              (        9        i        −        z                  )          4                      =      1          (      z      +      9      i              )        4              −      (          959      88529281        +          9360      88529281        i    )    =      1          (      z      +      9      i              )        4              −      (          1      9409              e              t        a                  n                      −            1                                    (                      9360            959                    )                      )        (                  (                  z          2                −        81        )            2              e              4        a        r        g                  (          z          +          9          i          )                      )    −      (          1      9409              e              t        a                  n                      −            1                                    (                      9360            959                    )                      )    =  −            e              t        a                  n                      −            1                                    (                      9360            959                    )                      9409    +            (              z        2            −      81      )        2        e          4      a      r      g              (        z        +        9        i        )              =

Equivalent forms of expressions with complex numbers Which expressions are equivalent to <mrow

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