expand (5 - x) ^{3}

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expand
(5 - x) ^{3}

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Natalia 4 days 2021-09-14T18:28:49+00:00 1 Answer 0 views 0

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    2021-09-14T18:30:38+00:00

    Answer:

     {(5 - x)}^{3}

     {(x - y)}^{3}  =  {x}^{3}  -  {y}^{3}  - 3xy(x - y)

    so \:  {(5 - x)}^{3}  = 125 -  {x}^{3}  - 15x(5 - x)

     = 125 -  {x}^{3}   + 15 {x}^{2}  - 75x

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